Hydro-logic KDF85/Catalytic Carbon Upgrade Filter — Compatible with smallBoy/Stealth-RO 22060, 2.5" x 10", 1 GPM

Compatible KDF85/Catalytic Carbon upgrade for Hydro-logic smallBoy and Stealth-RO 22060 systems. This 2.5" x 10" standard-size reverse osmosis replacement cartridge reduces iron, sulfur, chlorine and heavy metals to improve water quality for hydroponic and RO setups. Flow rating: 1 GPM. Replacement guidance: Stealth-RO — replace after 2,000 gallons; smallBoy — replace after 6,000 gallons. Designed to fit standard size slimline RO housing and comparable to Hydro-logic performance.