R/O Filter Membrane Housing Hydrometers & Refractometers 320 ppm before using calcium

320 ppm before using calcium and alkalinity products

and the needle valve provides the fine flow control needed for stable aquarium CO2 adjustment

This formula is part of New Life Spectrum's flagship tropical fish diet line

dose 1 capful or 5 ml for every 40 L (10 US gallons) on day one

Helps extend the service life of the pump when the motor block remains operational

R/O Filter Membrane Housing Hydrometers & Refractometers 320 ppm before using calciumR O Filter Membrane Housing The R O Filter Membrane Housing is a replacement reverse osmosis membrane housing for compatible aquarium RO and RO DI water filter systems. Replacement Housing for RO Membranes This standard membrane housing fits Aqua FX Stingray, Dolphin and Barracuda RO RODI systems as well as Reef Crest units, and should fit virtually any standard RO unit sold in the aquarium hobby. Membrane Housing Features Replacement housing for