4 " Large Sump Bottom Drain for Koi Ponds Product Type_Pond Lights you'll see a noticeable difference

you'll see a noticeable difference in your plants

It works by introducing beneficial bacteria into the water

It's easy to assemble

Prevents unsightly film and bubbles on water's surface

4 " Large Sump Bottom Drain for Koi Ponds Product Type_Pond Lights you'll see a noticeable differenceTired of manually cleaning your koi fish pond every few days? Do you want to maintain the cleanliness and hygiene of your pond effortlessly? Our Large Sump Bottom Drain is designed to remove the pond and fish waste, helping to keep your pond clean and healthy. The large sump 4" bottom drain is suitable for pond liners, fiberglass, and concrete ponds, and it fits 110mm (4") solvent weld pipe. It's a must have for gravity fed filter systems and can be