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System Aqua 30 All-In-One Aquarium (5 GAL) - DOOA

The 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 don’t have the room available for a separate ATO reservoir.

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