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- Mar 25, 2017
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If you have an open top, you can take a small piece of tape or a reef safe magnet to hold the top part the bag to the outside of the tank with the rest floating. Will keep the bag from drifting to your overflows or pumps.Depending on how your overflow system works and how many frags you bought I would or wouldn't based off that. I once placed the bags in and went to work to came back to a wet floor. If you have enough floating bags they can block the overflow.
If their in the box and your house is room temperature, that's plenty good.