4" Heavy Duty Bottom Drain with Diffuser Water Conditioner A large water change (approximately

A large water change (approximately 90%) is required before each treatment

Five year warranty

The table below shows Gallons per Hour (GPH) of water flow at different feet of head (height

Dosage Rates: Use approximately one ounce per 600 gallons of pond water

you first need to purchase complete air filter #ERPF1

4" Heavy Duty Bottom Drain with Diffuser Water Conditioner A large water change (approximatelyThis heavy duty bottom drain is very reliable and available with or without an air diffuser! Features include: 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 For use with 4" schedule 40 PVC fittings and pipe, use 4" male adapter (MA40)