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- Nov 4, 2019
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So I purchased this and every time I do the auto water change it seems to make my corals all close up. I’m guessing there is something in it that’s bad like grease. It there anything that’s ok for salty water that has like 1/3 hp since this is in my basement and needs to push the water up as I’m using 3/4” pex-a to deliver the the water?