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drain return overflow
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  1. General Reef Discussion
    OK...so I am ordering a tank and the maker wants to know the sizes for the drain and returns... Tank size: 48x24x24 ~ 120g Center trapezoid overflow Drain: 1" or 1.5" bulkhead? Which would be better? How large should the drilled holes be for each? Returns: I would like to run two returns...
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