Building an indoor pond

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Our pond was not this cool. This is in Berlin

Gather round children, and I’ll tell you a tale with not just one, but five morals. It was several a few* years ago, shortly after I graduated from college. I was living in a pretty large apartment with a couple of friends, a place that, well, let’s be generous and say that it had a lot of character. We decided, obviously, that we needed to build an indoor water feature. Not a little zen water trickler, but a full-on pond. Upstairs. I had a little bit of experience in the area, having built a few ponds before, so I was pretty confident that I knew essentially what I was doing. Which is, of course, exactly why my roommates decided to build the thing while I was out of town. I can’t really blame them. When I came home, I discovered what was essentially a plywood box full of rocks and pond, which is when I learned the first lesson:

1. It can be done with little to no expertise.

I’m not going to say that my roommate was an idiot, but only because he might read this. Idiot or not, though, with a small, inexpensive kit, a little research on the internet, and a few bucks worth of various materials from a local hardware store, he and another buddy managed to put together a fully functional and surprisingly attractive water feature, indoors, in just a few hours. I was astonished. There was a waterfall. There were plants. There were fish. The whole thing worked with no leaks and looked fantastic.

In fact, it looked so great that we decided that we wanted to move it to a place where it would be closer to the center of activity in the room. That’s when we discovered that

2. Once in place, it will not move.

Water is heavy. Like, really heavy. A gallon of water weighs more than eight pounds, but you probably know that. It’s hard to turn that knowledge, though, into the useful realization that you and your college buddies are probably not going to be able to drag a pond full of water across the room. Especially when you factor in the weight of the wood and veneer and the heavy substrate that the pond was built in (we used large gravel). We could have drained the pond and taken it out of the substrate and moved the whole thing piece by piece, but that would have essentially meant starting over, and we were fairly sure that it would end with leaks in the pump or hoses or something. So, the pond stayed right where it was. Which was actually good in the end, because it wasn’t near anything important, and was on tile near a floor drain (again, a very classy apartment). Moving the thing would have led to a much less pleasant learning of lesson number 3.

3. Don’t underestimate the spray.

A pond with a waterfall sprays everything around it. It doesn’t seem like much, just a droplet here or there, but that adds up, and quickly. You’ll want to take this into account with every decision you make in building the pond. What’s near it, what plants you choose, what type of floor it can be on and how that floor is treated prior to installation, what substrate you use, even what the wall coverings are. You’ll need to clean the area regularly to prevent mildew. You’ll also want to keep your caulk ready to go. Your caulk is your friend with an indoor pond. Speaking of new friends, the caulk gun and fish might not be the only friends you make with the indoor pond. You’ll also need toAlso not our pond, though we were this ridiculous around it, easily. (credit)

4. Watch the Windows
We loved our goldfish that we had in the pond. That’s why we were so sad when the first one disappeared. Sad and a little confused, but we figured we were just missing something. However, after losing about two fish a week mysteriously for a little less than a month, we were seriously wigging out. It wasn’t until early one morning when I came out to water the few plants that were outside of the spray zone that I figured it out. I walked in, and a big bird looked up at me with about as guilty an expression as a bird can have. Then, I swear on my oldest koi’s life, that bird shrugged at me and flew out the open window. Mystery solved, though not without losing several fish and getting a kinda funny new story to tell at parties.

5. Everybody loves an indoor pond.

We were recently out of college, we had a sweet, huge, kind of trashy apartment, and we were dumb guys. So, yeah, we threw a lot of parties. You know the one thing that never got broken in our place? The pond. Everyone went nuts over the thing and would ask us tons of questions about it. People were deeply impressed and, until now, we never admitted just how easy it had been to build.

*Let me have my soothing delusions about how long it’s been, thank you very much.

Indoor Pond Design: 3 Decisions To Make

When most people think of a pond they typically visualize them in an outdoor location, but you may be surprised to know that ponds can be built inside your home as well. Indoor ponds can be as small as a washtub or as large as space will allow, and they can easily include a small waterfall or water running over stones.
With just a little attention to design detail you can build an indoor pond that meets your aesthetic needs. You don’t have to be an expert pond builder. But there are several decisions you’ll need to make to avoid having to start over, once you find yourself halfway through your project.
Decision 1-What Will You Do With Your Pool?

You have several choices:

  • keep a fish or aquatic plants in it.
  • Include a waterfall or sprinkler that will add the soothing sound of moving water
  • Us it to create a more quiet mood, a pool that will reflect light off your walls and ceiling, or one where you’ll see orange goldfish swimming lazily

Decision 2-Decide the Pond Size

Pond size, along with its intended function, will determine the details of its construction.

  • Small Ponds: Use the basin of an old birdbath or even a plastic wash tub and can make it attractive and achieve the effect you want. To disguise it and make it aesthetically pleasing you can pile a few stones around the perimeter or even add artificial plants.
  • Mid-Size Ponds: Try using a child’s wading pool or a livestock watering tank. Ring them with rock and artificial plants to make them more attractive.
  • Large ponds: You have a potential for greater versatility in function and design when designing a large pond.

Decision 3-Simplicity or Creativity

If you want a more elaborate pond, try using landscape timbers and a pond liner. Just build the sides of the pond, one layer of timbers at a time, then line the inside with a pond liner you can usually find at a water garden supply shop. In using this design, be sure you secure all the parts safely together using nails or bolts for the landscape timbers or concrete mortar you use.
Depending on how you create moving water-waterfall or flowing water-there are a number of things you will need:

  • Water pump – Its size will depend on the size of the pond and the waterfall will look like
  • Water Filter – needed if you plan to have fish in your pond.

Typically, you will find a variety of pumps and filters at most discount stores. The size of your pond, the number of fish you plan to add, and the amount of water you will need to move over a specific period of time, will all help you choose the right pump and filter.
With a little imagination, you can build an attractive and safe pond that will be easy to maintain and add interest to the area where it’s built.

Indoor pond build

I want to build an indoor amazon basin.
I have a monster garage built on the wrong side of the dam house so I’m going to fill it with my small zoo. I want to build a pond roughly 12X6X4 if my math is rite it’s roughly 2100 gallons. I’m thinking steel skeleton wrapped in cement sprayed with sealant. I have a pump that pushes 100gallons a minute and 4 55gallon barrels set up as a filter.
Now my post if for this reason who has a pond that isn’t filled with koi and didn’t hire a pro to do it for you. I want to know the best idea for constructing a pond of this size. What are good options for materials sealants frame skin liners. What should the plumbing in the floor lay out like. Should I try gravity fed or just muscle it out with the pump. Is a skimmer useful in doors. Would a water fall or a gentle flow return be better. Should I run 1 return or 2. Is a 6000 gallons an hour enough to filter 2100. I plan on keeping big predatory fish. I already have Oscars arowana shovel nose catfish bichirs Dempseys and more. I don’t want to miss something and can’t afford to do it twice. I’m tiered of the idea my fish won’t get to full size in an aquarium so I want something big enough to do the job. I figure 72 square foot should be enough space.

After looking at the essentials of keeping your koi fish indoors, here we’ll spend some time exploring the particulars of building an indoor koi fish pond as well as examining some things to consider when creating an oasis for your “living jewels.”

Indoor Koi ponds are generally more cost effective and easier to maintain through cold winters than their outdoor counterparts. They can range from large, incredibly ornate and expensive undertakings, to simple wooden-framed boxes that fit in the living room corner. Regardless of which direction you choose, there are some basics that are helpful to know.

This is perhaps the most important consideration. How your house is constructed (and the governing building codes) factor heavily into where you can put your indoor pond. If your intention is to build a pond that is above ground, try to put it on top or as close to a load-bearing structure (wall or column) as possible. Where possible, have it run perpendicular to the joists.

The ground floor of your home (or on concrete) is probably the safest place for your indoor pond. Sometimes however, this is not practical or it may not provide the visibility you want (as it can be in your basement or garage).

Proximity to water and drainage is another thing to keep in mind, as you will need them both to be able to maintain good water quality for your koi fish. Keep the pond away from electronics and outlets. If you don’t have a ground fault plug dedicated to your pond, installing one is advisable.

Determining the Size of Your Koi Pond

The intended size of your indoor koi fish pond will dictate where you will be able to locate it (as well as the number of fish you should stock it with). To help visualize how big and how much space the pond will occupy, one trick is to use cardboard boxes to simulate the intended size.

The shape of your pond can have implications on the pounds per square foot on your floor and thus its weight-bearing capabilities. With each foot of water representing 62.4 pounds per square foot, how you spread the weight around will impact the height and width of your pond and potentially the look of it in the space you have chosen.

Koi Pond Materials

This is determined by your design, where it is going and personal aesthetics. The framing of the pond itself is most often wood (above ground) and concrete/mortar (in ground).

Once the pond has been framed, it can be given the finishing touches that suit style, decor and function. Tile, stone, rock and wood are a few of the materials koi enthusiasts use to add personal flair to their indoor ponds.

Before adding the lining (if you opt to not use a prefab pond), line the frame with polystyrene or an older blanket to prevent punctures, tears and leaks. Additionally, darker liners can prove helpful in promoting your koi’s natural colors.

Filters (biological, chemical and mechanical) as well as any aeration apparatus have to be accounted for as part of the material. There are many different configurations and options that can meet your needs and budget. Spend the extra time and money finding the right filters. Poor water quality indoors can lead to some less than desirable smells in your home.

Some Other Points to Consider:

  • Eighteen inches is the standard water depth that most floors in the U.S. are equipped to handle.
  • Natural light is preferred, so near a window or sliding glass door are good places for ponds. A halide light is another way to light the pond if natural light is insufficient.
  • A six-inch gap between the water’s surface and the edge of the pond is recommended to lessen the likelihood of your koi jumping out.
  • Consider bolting your above-ground pond frame together as it will be easier to take apart (should it ever become necessary).
  • Remember that filtration is a vital component of any pond and it will have to be factored into the aesthetics (both visual and aural) when you decide on the size and placement of your indoor koi pond.
  • The indoor koi pond will create a more humid environment, so have dehumidifier or ceiling fan handy to disperse the extra moisture and heat.
  • Leaks can be costly, so as part of your building process fill up the pond and check for leaks before adding any finishing aesthetics.

No matter what size or shape you decide on for your pond, Next Day Koi offers a wide selection of koi fish sourced from some of the best farms around the world to help you stock it.

Coupled with a great selection of both sizes and types, we leverage our high volume of shipping through UPS to bring you some of the most competitive Next Day Air shipping rates in the industry.

Contact one of our representatives to see how we can help you stock your pond.

One of my favorite things in the world to do is to work on my landscaping. Whether I’m planting flowers or involved in a huge DIY garden project, I just love being outside and improving my outdoor living spaces. Plus, you know that the more work you put into your outdoors, the higher your curb appeal, right? If you ever decide to sell your home, anything you do outside can seriously help you to increase your listing price. So with that said, I wanted to share with you these 25 charming little mini water gardens that you can make to spruce up your outdoors – or even your indoors if you prefer.

I love the water, which is why I adore any type of water feature. These little water gardens are so perfect for adding a decorative touch to your patio or they’re also great for the yard. And, they’re the perfect water feature for smaller yards that just don’t have the space for full sized ponds. The great thing about these little gardens is they are very cheap to make and you can use a lot of recycled or otherwise repurposed things to make them. If you do have the space and want to go all out for your water garden, take a look at these 30 creative water features that you could totally DIY in your open space.

I love having a large garden area but I fully understand that not everyone has the space for full sized gardens and water features. That doesn’t mean that you can’t add some beauty where you do have space, though, and these 20 mini water gardens are the perfect touch. Some of these can easily be placed indoors, too which gives you a wonderful home décor idea. Some of them can even hold fish! Now, if you don’t have a large garden area and you want to add a gorgeous water feature, this is definitely the list of ideas you need to see. Also, if you need some more ideas on how to turn small spaces into beautiful garden areas, be sure to check out these 40 space savvy small garden ideas.

Now that I have you all excited to add some beautiful water gardens to your life, let’s take a look at these amazing ideas. You can make many of these with things that you probably already have around the house, which makes them even better. Take a look and as always, let me know which one is your favorite. I can’t wait to hear how you’ve beautified your outdoors with a mini water garden!

Table of Contents

1. Wine Barrel Mini Pond

A wine barrel cut in half makes a gorgeous mini pond and gives your deck or garden area a lovely rustic look. You can find wine barrels at a lot of flea markets and thrift stores – or a winery if you have one close. Just cut it in half and then add your garden essentials to customize it.

Source/Tutotial: scapeclub

Goldfish pond tutorial:

2. Tabletop Rock Mini Garden

This tabletop water garden is made from a ceramic bowl and has lovely rocks to give it dimension and character. You can easily set one of these up, with or without the mini fountain, and just add your favorite water plants to give it greenery. You can find this one on Etsy for under $50 if you don’t feel like making one yourself.

Source/Tutotial: etsy.com

3. Stock Tank Mini Yard Pond

If you have the space and want to go a bit bigger with your water garden, you can use a stock tank to create a raised yard pond. I love the idea of just setting up a tank and then adding water and plants, and you could even paint the tank if you’re so inclined. You can pick these tanks up at any tractor or livestock supply store.

Source/Tutotial: penick.net

4. Galvanized Bathtub Mini Pond

An old metal bathtub, kitchen sink, or just about any similar structure would be perfect for creating your little mini water garden. Just set it up and then add your water and whatever flora you want to include. Add stones or glass items to add character and even a little fish or two if you want.

Source/Tutotial: bhg.com

5. Galvanized Metal Bucket Water Garden

Turn an old metal bucket, which you can pick up at any flea market or yard sale for really cheap, into a beautiful and very rustic mini water garden. Just add a small water fountain kit and then fill the bucket with rocks. You’ll hear the wonderfully relaxing sound of trickling water whenever you’re near the bucket and this is a good one to do if you don’t really want to add plants.

Source/Tutotial: onsuttonplace.com

6. DIY Clay Pot Water Garden With Fountain

Clay pots are also a wonderful way to add water features to your property. And, they’re pretty cheap at the Dollar Store. Just grab a few in different sizes and set them, adding a fountain to the mix. You can add plants to the pots that aren’t upside down and fill the bottom with river rocks or glass stones. This is a great one for the deck or if you choose smaller planters, you could even put this one inside.

Source/Tutotial: diyncrafts.com

7. Easy DIY Container Garden

So, container water gardens are the easiest way to add a water feature without going all out yard pond. You can even use plastic containers, which you can get at Big Lots or the Dollar Store for under $20 in most cases. Then you just need to add your plants and even a few small fish if you want them. You can build this gorgeous outdoor mini water garden for less than $40 total.

Source/Tutotial: whatsurhomestory

8. Contemporary DIY Water Garden

I love the contemporary look of this little mini water garden and you can build it for less than $30. You’ll need a watertight container, a fountain pump, some concrete pavers for the edging, rocks and your water plants. Just dig a hole big enough for your container to sit in and then work it like a regular pond. It’s a gorgeous little mini pond that will definitely add character to your garden area.

Source/Tutotial: thegardenglove

9. Hypertufa Fountain Mini Water Feature

I love this hypertufa stacked millstone fountain. It would be so perfect for the garden area and you can pick it up on Etsy for less than $200. It’s made with Portland cement, peat moss, perlite, hypertufa and concrete. The fountain is perfect if you want that running water sound and you could decorate it with plants around the base if you wanted.

Source/Tutotial: etsy

10. Easy DIY Mini Pond Box

If you don’t have a structure to use for your mini water garden, just make one yourself. This box is really pretty and really easy to build. It’s made from cedar and the entire look is just so gorgeous. With a section for rocks and plenty of room for your water plants, this is sure to be the perfect mini water garden for your deck or patio.

Source/Tutotial: bhg

11. Repurposed Enamel Wear Mini Water Garden

If you want a repurposing idea for creating a mini water garden, why not put all that enamel wear or those old metal cooking dishes to use? You can just fill them with water, add your plants and then sit them wherever you want them to be. This is a great idea if you want a really quick, and really rustic looking, mini water garden. You could sit these all around your flower garden or deck.

12. DIY Indoor Mini Water Garden

If you want to add a mini water garden to your indoors, you can do so with a glass container. A glass mug works really well, or you could use a small bowl. Just add your plants, and you can leave them in their growing containers, maybe some peat moss and then your water. These are so easy to maintain and give you the lovely look of the outdoors right there in the house – which is perfect for the colder months when you’re really missing your outdoor garden.

Source/Tutotial: radmegan

13. Easy Indoor Pond In A Jar

Here’s another beautiful indoor mini water garden that you can put together in no time. You can use any larger glass container like a glass flour jar or old fish bowl. Just add aquarium rocks or small river stones to the bottom and then fill with water. Top off with your favorite water plants and you’re all done.

Source/Tutotial: experimentalcraft

14. Cement Planter Water Garden

This is a great idea if you want to add a mini water garden to your deck or patio. Just take a large planter – you can get these at the Dollar Store for around $5 or so – and add your water and plants. You can do these in any size, although the larger ones do allow for more plants so if you want water lilies and all sorts of other plants, opt for the largest planter you can find.

15. Gorgeous DIY Water Terrarium

I love the look of this water terrarium, which you could put indoors or out depending on where you really want it. It’s just a really large bowl – like a large rounded fish bowl – and it sits on a metal base, which you could easily build yourself. I love the idea of planting just one plant and watching it grow but you could just as easily add multiple plants if that’s what you want.

Source/Tutotial: scrapandsalvage

16. Square Planter Water Garden

So, when you’re choosing the container for your mini water garden, don’t necessarily overlook square planters. While traditionally shaped planters are the go to for the most part, these lovely square shapes can add wonderful character to your garden or deck. They fit perfectly into deck or patio corners and they’re just as easy to set up as their round counterparts. Just add water and your favorite water plants and you’ve got a lovely mini garden that’s a bit more contemporary but just as beautiful as a round garden.

Source/Tutotial: midwestliving

17. Upcycled Stump Mini Water Garden

I guess you could call using an old stump an upcycle? Anyway, this is such an innovative idea and a great way to give those unsightly stumps a little decoration. Just hollow them out and turn them into mini water gardens. I love this idea, mostly because it’s the greenest way I know to get a water garden and it’s just a beautiful concept, isn’t it?

18. DIY Sunken Mini Pond

If you have the space in your yard, a sunken mini water garden is a great idea. You don’t even have to have a large space, just large enough for whatever container you plan to use to house your pond. You can even dig a few holes and plant small planters in them to create a pond, create a little pond area and cover the space between your containers with river rock or plants.

Source/Tutotial: bhg

19. DIY Water Garden Inside A Rock

I absolutely adore this mini water garden that is housed inside a rock. If you have a large rock, you can hollow it out a bit – if it’s not already – and place your pond inside. The rock will be naturally waterproof so there’s no need to worry about your water trickling out. This is a great way to use up those larger rocks in your garden area without worrying about having to move them.

Source/Tutotial: gardeners

20. Mini Wildlife Pond

If you are planning to put your mini water garden outdoors and you have the space in your yard, why not turn it into a gorgeous mini wildlife pond. You use the same concept as container gardening but you put the container in the ground. Then add your rocks and plants and anything that will draw in the wildlife that you want to see. This is even a great little pond for ducks if you have a few and kids will adore seeing all the wildlife that will come to your little pond for a quick splash or a drink.

Source/Tutotial: rollercoaster-mum

Today we’re posting a DIY article on how to construct a Monster Indoor Fish Pond. This one was built in a small garage but you could put one anywhere you want, just remember you may need a dehumidifier if you don’t have lids or good ventilation.

You can adjust the design and size needed to fit your location as well, using a liner makes it easy to modify because you can make it any shape you want. This specific pond measured out to be 8′ long by 4′ 7″ wide external dimensions, the inside dimensions were about 7′ 2″ by 4′. It does narrow down to about 3′ wide in the rear but you could make it a normal square as well. This ends up holding around 400 gallons of water, depending how high I filled it up. Anything more than 30″ and it is hard to each the bottom, keep that in mind.

Approximate Materials needed for this pond were as follows.

  • 15′ x15′ Firestone 45mil EPDM Liner
  • 30-35 8′ 2×4″
  • 15 sheets of 2’x4′ 1/2″ Plywood, you could use bigger sheets as well
  • 4 sheets of rigid insulation 4′ x 8′ sheets
  • Expanding Foam (Optional, I used it to seal some foam insulation gaps and to hold the bottom sheets of foam together then covered it all in tape)
  • A few hundred 2.5″ and 3″ screws
  • Metal L Braces for the corners (could probably go without but I am careful)
  • A couple rolls of duct tape to secure the insulation

Just a rough setup to see what kind of room I had.

Frame built, still needed more bracing. This is just 2″ x 4″ screwed with 3″ screws.

Added more vertical braces, looking good now.

Time to mount all the Plywood, this is held with the 2.5″ screws. I also added a bottom 2″ x 4″ brace to keep it from bowing. Nothing is needed on the floor for support, concrete is pretty strong. We will add some foam insulation to the floor though.

Notice the metal braces on the corners. I did these on all the internal corners. Just for peace of mind.

Adding the rigid foam insulation. Not only does it insulate the pond but it also protects the liner from punctures. It is nice and smooth, no risk of the wood cutting into it this way. The fish can also bang rocks around without worry because the foam has a little bit of give, not much but enough to help prevent accidental punctures.

Adding the expanding foam to the joints. I thought it would make the bottom more realistic instead of being completely flat.

Covered it all in tape to hold it all in place and to give the liner a smoother surface. The expanding foam can cure a bit rough.

Putting the 15′ x 15′ EPDM 45 mil Firestone liner in. Once in you can add a bit of water to help you get creases out. The weight of the water makes it easier.

Added a top brace to help it from bowing. About 2′ of water at this point, which is roughly 360 gallons.

Here the brace was covered in liner material and the pond was filled up a bit more to about 400 gallons. I also added the waterfall which also serves as the filter. I just built it out of scrap leftover wood and liner, nothing to complex. The liner was also trimmed and stapled down on the edges.

Here is the pond with tiles on the edges to give it a cleaner look. I also added some driftwood, art work and plants. The waterfall provides filtration, oxygenation and water movement.

Here are some fish enjoying the new digs. An Oscar cichlid, Venezuelan Pike cichlid, and a Niger Catfish. You can also see a Bichir (Polypterus) hanging out on the left side.

You can see some Bichirs, Jaguar Cichlid, Oscar, Pike Cichlid and a Convict.

One last shot of the mega pond.

Build Your Own Indoor Water Ponds

Ponds are not only a welcome addition to the landscape, but they can also be attractive features indoors. They are easy to create, easy to maintain and can be tailored to fit your needs.

Construction of Indoor Water Ponds

The only difference between an indoor pond and an outdoor pond is size and location. Indoor ponds can be as small or as large as space allows. The size of the pond and its function will determine its overall construction. A waterfall pond can also be constructed.

An indoor pond can be prefabricated or custom made. You can also purchase plans or build your own pond frame. Prefabricated ponds and waterfall kits include everything you need and are available in various shapes and sizes, making it easy to find the one best suited for your needs.

Indoor ponds can be made from nearly anything including rubber containers, plastic pots or storage bins, toddler swimming pools, glass aquariums, etc. You should avoid using metal or wooden containers unless you use a liner. Basins or plastic washtubs make exceptional choices for smaller indoor ponds.

Piled up stones and plants can be incorporated along the edges of the pond to help conceal the container.

How to Create a Miniature Pond for Indoors

Prior to building indoor ponds, you’ll need to determine its location. Due to weight issues, any pond over 50 gallons should be placed on the lowest level of the house, like the basement.

Place your container or prefabricated pond where you want it. Stack clean stones along the edges to build up the sides. The top row of stones should cover the edge of the container to help conceal it. Add a small submersible pump (about 75 gph, depending on size) to keep the water moving.

Then begin adding some houseplants (or artificial plantings) along the outer edges of the pond. Popular choices include peace lilies and pothos. However, nearly any plant that enjoys moist indoor environments can be used. Before setting these plants in place, be sure to repot them with clay or sand soil. You can place potted plants in tiers, with some outside the water and others only partially in the water, which can be accomplished by using stones or overturned pots to keep the top of the container above the water.

If the pond is in the basement, you may want to include a pond heater as well. You can also add dechlorinator or bleach to help keep it clean unless you intend on having an indoor goldfish pond.

Indoor Goldfish Pond

If you put fish in the indoor pond, it will require a filter to make sure the water stays clean and clear. An aquarium filter is suitable for most indoor ponds. Also, if you have an outdoor pond, you may want to add some of that water to your indoor pond.

Goldfish usually work best in the indoor pond and should be fed minimally. Fish in an indoor pond may sometimes become jumpy; therefore, it may be a good idea to either place netting around the pond or build higher edges.

Indoor Pond Problems

The biggest problem with indoor water ponds is keeping them clean. Indoor ponds should have more frequent water changes than outdoor ones. Indoor ponds should receive frequent water changing. Depending on the size of your pond or if fish are included, this can be done on a weekly or bi-weekly basis. In addition, indoor ponds lack the benefits of natural sunlight, so additional light will be needed in the form of metal halides or fluorescent lights.

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