HYDROS DC Solenoid Water Valve (Freshwater Use Only) Testing Accessories add a powerhead or airstone

add a powerhead or airstone and allow the CO2 to gas off

large Butterflyfish

phytoplankton

Fully Submersible

HYDROS DC Solenoid Water Valve (Freshwater Use Only) Testing Accessories add a powerhead or airstoneThe HYDROS DC Solenoid Valve is a handy HYDROS Control 2 and Control 4 accessory that provides easy on off RO or RO DI water flow. You can connect the solenoid to your reverse osmosis filter and use it to top off your tank if you dont have the room available for a separate ATO reservoir. The HYDROS DC Solenoid Valve works in conjunction with a HYDROS aquarium controller and an optical or mechanical water level sensor. When the sensor detects the water