Bottom drains in koi ponds enhance water quality by improving water circulation and removing bottom debris as it automatically vacuums the pond.
4" Aerated Koi Pond Bottom Drain Features:
Welded FPT threaded inlet eliminates the need for rubber coupling
Threaded center stand pipe securely attaches dome lid to base
Sixteen stainless screws securely attach liner ring to base with water tight seal
Heavy duty, roto-molded design offers superior strength
Threaded 4" female inlet for use with 4" schedule 40 PVC fittings and pipe
Air diffuser is incorporated into the dome lid - incoming air is delivered up through the center stand pipe allowing air tubing to be installed under liner
1/2" airline tubing adapter, recommended air flow through diffuser is .5 - 1.5 cfm
