Pond Boss Forums POND CONSTRUCTION Renovating a Pond or Lake? How to drain a large pond to do a repair? Ideas?

No, the output side needs to be lower than the level you wish to drain the pond to, and about double the length than the intake. Once you fill the output side, replace the top cap, remove the output cap, and the output water will suck water up from the pond to a point lower than the water level in the pond and start the siphon.