BRS GFO & Carbon Reactor - Deluxe - Maximize Filtration Efficiency with the BRS Deluxe Reactor, optimized for Carbon and GFO media, includes an easy-to-adjust ball valve for precise water flow management. Features an easy-to-change filter cartridge design, a compact and sleek look, and uses 1/2" Push Connect fittings with 1/2" Mur-Lok Polyethylene Tubing.