Determine the lowest point in your pond if possible. This is where the bottom drain will be installed. Install the lower half of the bottom drain at the predetermined point in your pond, attaching it to the ABS elbow pipe with ABS glue available at plumbing supply and hardware stores, and home centers.
At the lowest point of the pond, stub up a 3 inch bottom drain and cap it off. Clean out dirt from around pipes for cement. Cap the air line and then pressure test all lines.
In the last five years Bottom Drain Technology for ponds has come a long, long way! Why would you want a bottom drain for your pond? See Fig.
If you do not see a video hereplease refer to the info at the bottom of this page. Winter Survival. Ulceration Microscopes.
Improves water circulation, helps remove suspended particles and debris from the bottom of your pond reducing maintenance. It is said that you can not beat a bottom drain system. If you have a pond that does not have a bottom drain but wish you had installed one, or do you have a bottom drain and want to install another here is the answer.
After your pond is dug. Make sure the bottom is sloped to where you want to locate your drain. Dig the hole and trench for your bottom drain and plumbing.
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Bottom drains in a pond usually work along with the filtration system to eliminate sediment and keep the water clean for the koi. Sediment settles at the bottom, and the force of the water pushes it into the drain. From there, you'll need to decide how you want to rid the sediment from the pond.