The CO2 Reactor 1000 is a hermetically sealed unit for introducing CO2 into large aquariums. It is externally mounted and can be used with aquaria up to 500 gallons. 15 x 3.
Other Items from Co2 Products Red Sea CO2 Pro System - Red Sea 5 lb C02 Cylinder Bottle (Empty) - Hydor CO2 Green NRG Advanced - Hydor CO2 Green NRG Exclusive - Hydor NRG CO2 Disposable Cartridge 74 gm - Aqua Medic Bubble Counter - Milwaukee Instruments Solenoid Valve, CO2 Regulator with Bubble Counter - Aqua Medic CO2 Reactor 1000 (External) - Aqua Medic CO2 Reactor 500 - Red Sea C02 Reactor (Reaktor) 500 - Aqua Medic M-Ventil Solenoid Valve -