Find Reviews and Compare Prices for:       All ProductsCO2 Products     0.0 (0)   Add a review Red Sea CO2 Electronic Control Valve Solenoid   For the safe use of CO2 in any aquarium it is higly recommended to automate the system. A control valve will do this for you by connecting to either a simple time switch or a pH controller. The Red Sea solenoid control... Have a question? Just Ask! Member Reviews Compare Prices Product Spec Send to a friend Set Price Alert Searched Red Sea CO2 Electronic Control Valve Solenoid in 150 stores, 2 results found Image Description   Store   Price Red Sea CO2 Electronic Control Valve (Solenoid) If this item doesn't belong here, click Remove and help us keep our results accurate.   Amazon.com   2 Store Reviews   $77.78 Go to Store Red Sea CO2 Electronic Control Valve (Solenoid) If this item doesn't belong here, click Remove and help us keep our results accurate.   Amazon.com   2 Store Reviews   $138.36 (used) Go to Store You can also search these stores   Find this product on eBay   eBay   5 Store Reviews   Search on eBay Are we missing a store? Let us know! Something wrong in this page? Let us know! Related products: More Red Sea CO2 Products Other CO2 Products internal use: spec438