The Planted Tank Forum - View Single Post - Need help understanding sump filtration please
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Old 01-29-2013, 01:40 PM   #16
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Here is another idea. Use a diy style pvc overflow with the intake set low, but use a check valve higher up the stand pipe at the water level to which it would be safe to drain, thus breaking the siphon if the water falls below said check valve. Yes/no?
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