The Planted Tank Forum - View Single Post - Idea as a solenoid
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Old 12-10-2008, 09:38 PM   #2
Wasserpest
Are these real?
 
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Sure you can do that. Best is to let the powerhead suck the bubbles into the inlet, and have them just escape to the surface while the ph is off. That way the pump doesn't get airlocked while it is off.

A real solenoid is worth it though... saves CO2, and turning off the powerhead at night reduces overall circulation in your tank.
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