Complete Air Filter for Stratus Rocking Piston Compressors Beneficial Bacteria (Koi Ponds & Water Gardens) Fountain heads can be installed

Fountain heads can be installed under water (nozzle tip must be exposed) or externally

Black dye creates a more reflective surface appearance while the the blue dye creates Caribbean blue water

1-1/4" Check Valve Assembly

EasyPro concentrated pond dyes may be poured directly into the pond

Dosage Rates: Rates range from 2

Complete Air Filter for Stratus Rocking Piston Compressors Beneficial Bacteria (Koi Ponds & Water Gardens) Fountain heads can be installedThis is the complete air filter used with Stratus Rocking Piston Compressors. There was a switch over in 2013, so be sure that yours is this style rather than the former ERPA. The complete filter includes 1 each ERPF12E air filter element. Dirty air filters are the biggest cause of compressor failure. We recommend replacing air filters every spring and fall.