Hydro-Logic® KDF/Catalytic Carbon Upgrade Filters Size:Hydro-Logic Big Boy KDF85/Catalytic Carbon Upgrade Filter contains an isolated form of

contains an isolated form of bacillus bacteria known as bacillus amyloliquefaciens

it simply allows plant foods to work better because the nutrients that you are feeding can actually get into the roots easier

Provides high phosphorous

Crucial secondary trace elements enhance photosynthesis and respiration

all-natural source of numerous essential elements and complex metabolic compounds

Hydro-Logic® KDF/Catalytic Carbon Upgrade Filters Size:Hydro-Logic Big Boy KDF85/Catalytic Carbon Upgrade Filter contains an isolated form ofKDF Catalytic Carbon Filters reduce iron, sulfur, chlorine, chloramines and heavy metals. Great for city or well water! Bacteriostatic qualities do not allow microbes to breed in filter. Doubles standard green carbon filter. #741622 is 10 in x 2. 5 in. #741624 is 20 in x 2. 5 in. #741626 is 20 in x 4. 5 in.