Hey everyone, so I have a 20G system that’s been running for about 8 months now, I have 2 big now live rocks in the tank and a whole bunch of marine pure sherries that have been in the tanks since the beginning. Currently only have 2 clowns and corals in the tank and I wanted to remove one of the big rocks and replace it with new rock that has better coral placement option ]s and that will provide better flow pass through. i was wondering if remove that rock would cause harm to system or cause a crash?