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overflow setup

  1. General Reef Discussion
    Just got a used 100 gallon acrylic tank and stand. I need some help and advice for the overflow setup. It has 5 holes drilled in the floor of the tank. 1 1/2 inch at each of the rear corners and three 1 inch across the middle. I was going to glue acrylic discs to cover the center 3. I have 3...
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