Boyd's Chemi Pure Blue 5.5 oz RO Fittings & Accessories PhosGuard may yellow somewhat as

PhosGuard may yellow somewhat as it picks up organics

Add once in the morning

such as the aquarium in the pictures shown below

whether or not you include substrate in the refugium is not important

2yr warranty

Boyd's Chemi Pure Blue 5.5 oz RO Fittings & Accessories PhosGuard may yellow somewhat asBoyd Enterprises is proud to announce a revolutionary NEW addition to the Chemi pure family, Chemi pure Blue! Chemi pure Blue is specially created for fantastic results in reef and marine aquariums. Our NEW proprietary blend of premium, low dust pelleted carbon and high capacity ion exchange resins are skillfully combined to create a superior all in one filter media in a nylon bag. Chemi pure Blue significantly reduces organic compounds and phosphates