Commercial Reactor for Calcium The Reef Octopus 250PRO Commercial Calcium Reactor was created especially to meet the demands of the commercial industry, which includes fish farms, public aquariums, and aquaculture facilities with a capacity of up to 1,500 US gallons. Among the features of the Super Reef Octopus calcium reactors are an effective recirculation pump with a two-year pump warranty, excellent craftsmanship, and a high-performance reverse flow design. There is no need to worry about moving parts freezing up and breaking shafts because our commercial calcium reactors come with our very own high water volume Water Blaster pumps, which are standard with Silicone Carbide shafts and bearings. equipped with integrated bubble counters to track the rate of CO2 drips and a pH probe holder to measure the PH inside the reactor's first chamber. to