I need help on the best way to grow coralline algae. I have tried everything, like the purpleup supplement or taking a tooth brush and scraping the algae off the live rock but nothing will work . it wont stick
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What is the purpose of corraline algae ?
Definitely not okay to do that. You'll crash your tank and kill everything. My rule of thumb I've always used is one fish every 3 months, unless adding a schooling fish such as anthias. And judging by your questions I'm assuming you're new to the hobby, so I'd stay away from harder fish.

