The Planted Tank Forum - View Single Post - Drilled overflow to canister intake conversion
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Old 12-08-2012, 04:22 PM   #9
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It's still a closed system, no worries if all bulkheads and canister are sealed well.
If the intake is gonna be at the bottom of the tank just make sure you keep it clean and free from clogging, you don't want to starve the pump.
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