MarinePure Bio Filter Media Spheres - 1 Gallon API Seachem Purigen - 250 mL

Seachem Purigen - 250 mL is a synthetic filtration resin for freshwater and saltwater aquariums

Mounting style: overhead suspension

Auto shut-off safety feature helps protect the heater if overheated or not properly positioned

algae risk

Use approximately 1/2 cup / 125 ml for every 100 gallons of actual aquarium water volume

MarinePure Bio Filter Media Spheres - 1 Gallon API Seachem Purigen - 250 mLMarinePure Bio Filter Media Spheres 1 Gallon MarinePure Bio Filter Media Spheres 1 Gallon is a larger volume of porous 1. 5 inch ceramic biological media for aquarium sumps, canister filters, wet dry filters, and high capacity filtration systems. 1 Gallon MarinePure Spheres for Larger Biofilters The 1 gallon package gives hobbyists more loose sphere media for larger systems or higher biological media capacity. The spheres are easy to arrange in filter