In October i added 2 pieces of pukani dry rock to established tank to provide more hiding spaces. I expected the uglies but about 2 months ago the gha showed up mostly on top surface of new rock. I’ve been trying to wait it out. Now I plan on removing the rock since it is not glued in place and scrubbing the algae off and rinse in RODI. Should i just do that and return rock to tank or should I let it sit out for a while. If so how long? I don’t want to kill off any good bacteria. Any other good ideas or recommendations would be greatly appreciated.