Ok, i am having a wonderful!!! time trying to get rid of this bubble algae. I have tried to bring the rocks out and scrub them off then rinse them off. But to no avail, i keep seeing it slowly pop up, or they were ones that i didnt see before. Now i was thinking about getting a emerald but i was worried if they might get my fish, 3 of them sleep in the rock work. Would they be in trouble?