Black mollies work great on hair algae. You can also acclimate them to salt water and then they munch out on all the algae in your sw tank. I used 2 b mollies in my 20 gal sw tank as my cycle was ending and never fed them and they kept my algae outbreak in check. I've been thinking of using them in a Qtank and switching them back and forth between qtank and fw tank.
Kevin
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