Ok, I've decided to give this method a shot, I've tried every other option possible to rid myself of this crap. I just underwent a tank move and figured now is a better time than ever to spot treat each individual rock. I applied 3% directly to the affected areas and let sit for about 3 minutes, washed rock, and place it back in the tank. I've only have tried it on 2 rocks so far
Here they are immediatly after treatment.
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And here is the whole tank with my ugly algae everywhere.
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Wish me luck!!