Many pond builders have found that adding a bottom drain helps keep a pond cleaner. Fish waste and other muck that accumulates on a pond bottom can be easily removed by a bottom drain. These heavy duty, roto-molded 4" bottom drains features 16 stainless screws for watertight penetration through liner. Optional air diffuser in lid increases circulation and cleaning capacity. Incoming air is delivered through center standpipe, allowing air tubing to be installed under liner. Threaded center stand pipe securely attaches dome lid to base For use with 4" or 3" Schedule 40 PVC fittings and pipe (3" requires reducer) Optional air diffuser has 1/2" barbed inlet fitting, recommended airflow of 0.5-1.5 cfm Bottom Drain Kits EasyPro Bottom Drain Kits include the aforementioned bottom drain, as well as a 3" bulkhead fitting, 3" valve and fittings necessary to connect bottom drain into skimmer box (flex pipe not included). EBD4A Instructions EBD4 Instructions
