Pond Construction > Bottom Drains
Pond Bottom drains are generally accepted as a must and should be fitted to all Koi ponds under construction. Bottom drains are designed to be placed at the deepest part of the pond for the removal of the wastes and the settlements of the koi.

The vast majority of solids will sink to the bottom of the pond in time, where ideally, they will be sucked into the bottom drain and fed to the filter systems where they will be either extracted from the water. Bottom drains count for the vast majority of the water circulation.

Bottom drains - or the pipe work from the drain to the settlement chamber should not be too long. This is because although there is water flow through the pipe work, the heavier solids tend to settle out and can build up in the pipe work itself.
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Nowadays Pond Bottom drains are generally accepted as a must and should be fitted to all Koi ponds under construction.The Pond Bottom drains are designed to be placed at the deepest part of the pond for the removal of the wastes and the settlements of the koi.The vast majority of solids will sink to...
£22.95
This bottom drain converter, will convert a 110 mm metric to 4" Imperial . This Bottom Drain Convertor would be used when you have a 110 mm Bottom Drain and you need to use 4 inch pressure pipe for your bottom drain.The Bottom Drain Converter socket features a male inner 110 mm insert to glue i...
£9.95
If you have a pond that does not have a built in bottom drain system then this Aerated Portable Bottom Dome is just what you need.The Portable Aerated Bottom Dome is weighted so that it sits on the floor of your pond. Simply attach a pipe from a pump and enjoy all the benefits of a bottom drain syst...
£94.95
Although all Koi ponds should be fitted with a bottom drain, Many people who don't fit a bottom drain always wish they had, well the retro bottom drain is your answer.This is a portable bottom dome that sits on the floor of your pond. With no digging or intensive labour needed. Just place the we...
£79.95
These Spindrifter Aerated Bottom Drains are a extremely high quality fabricated bottom drain unitThe Spindrifter Aerated Bottom Drains membrane and backing plate fit into a recess in the specially manufactured dome (provided). This recess in the dome prevents the membrane from becoming detached. Thi...
£99.95
The Spindrifter Replacement Air Domes will replace the standard dome on your 4" bottom drain. The unit has a wide diameter rubber insert with thousands of tiny holes to allow the air flow to come out.The air line supply can either be inserted inside the length of the bottom drain pipe - coming ...
£79.95
These Ring Aerator Bottom Drains are perfect for Ponds, gravity fed quaratine tanks and small Ponds,The dome is removable with a large integral surface mounted air ring diffuser around the outer edgeAvailable in 50mm and 110mm .The Bottom Drain comes complete with air tubeKept on Premises...
£29.95