My tank is about six month old. My coral is doing well and my fish are happy. However I am having a huge issue with hair Algae. I have 10 crabs that could only eat so much. It seems to only grow on the sand and the back wall of my nano. All of my rock have a little but not much to speak of. I converted my middle portion of sump on the nano into a refigium to try to help. Any suggestions?
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