Knowledgebase
Welcome to the BTL Knowledgebase. Ever since we started lining ponds, creating covers, and helping people with their projects, we've gotten asked a lot of questions. Many of these questions are repeatedly asked, so we put together the BTL knowledgebase to help answer any questions you had about a particular subject. We are adding new questions every month, so continue to check back often!
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Is rainwater good for ponds?
Rainwater can be a satisfying zero-cost source of naturally soft water free of chlorine and its derivatives. There are, however, some caveats to consider before you decide to rely on the weather to keep your pond healthy and happy.
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What will eat algae in a pond?
When trying to control algae in a natural way in a pond, many people look for fish or other lifeforms they can add to do the job.
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What is the best way to get rid of algae in a pond?
The best way to get rid of the algae in your pond depends on your budget, your willingness to change the pond’s design, and your interest in natural products.
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How do you edge a wildlife pond?
Wildlife ponds need durable but natural looking edges to keep animals from damaging the liner or turning the watering into a muddy mess.
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How can I make my pond edge look natural?
Some people want a formal and well-defined look for their pond edges, but most are going for a natural appearance that blends into the landscape.
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How do you hide the edge of a preformed pond?
You have fewer options for hiding the edge of a preformed liner than for a flexible custom liner.
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How do I keep my pond liner in place?
There’s a few tricks to keeping flexible liners from shifting and moving after installation.
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How do you insulate a pond?
The best insulation for a pond must go in place during installation, but you can still add some insulation to an existing pond.
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How do you rock a pond?
Adding rocks to a pond means more than just dumping some gravel across the bottom. For a truly natural looking rock lined pond, your job starts at the edges.
How do I build a cheap garden pond?
Digging a shallow depression in the ground and spreading out a small piece of flexible liner is the cheapest way to make a quick pond.
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What should I put on my pond floor?
Putting any material on the bottom of the pond helps give it a natural look, but it also complicates maintenance over the years.
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Can you put tap water in a wildlife pond?
Tap water is acceptable for topping up a low pond but it’s not ideal for filling the whole thing.
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How often should pond water circulate?
The standard for pond circulation is a complete exchange of the pond’s volume once per hour.
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Can goldfish survive in a pond without a pump?
Goldfish require more oxygen dissolved into the water than plants alone can provide, even in a small pond.
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How can I make a small pond naturally?
For a natural pond with minimal work, the easiest method is to find a sloping area that already drains a lot of water and block it off with a small earthen dam.
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How do you aerate a pond naturally?
In nature, ponds are aerated by creeks, springs, and streams that flow into them.
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How do I build a small pond without a liner?
If you truly want to install no pond liners at all, you’ll need to pick a spot on your property that features natural clay soil deposits.
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How do I keep my pond water clean and clear?
Everyone’s got a secret for clear pond water, but some methods are more proven and reliable than others.
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How far should a pond be from a house?
The specific distance you’ll need to keep between your house and any waterworks like a pond depends on local regulations and building codes.
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How do I cover the edges of my pond liner?
There are many ways to cover and hide the edge of the pond liner where it overlaps the ground.
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Should I put sand in my pond?
Sand is just one of many materials to cover the bottom of a pond with, and it has its own benefits and issues.
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