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water change with sump
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  1. General Reef Discussion
    I have a 39 gallon tank--we added a sump with and overflow now I don't know how to do my water changes--do I do it from the sump-- then how do I clean the junk out of my sand and not screw up the overflow. If I do it from the tank then my husband has to hold the overflow and lower it so it...
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