Scrubbing them all can cause an explosion. If you noticed when you scrubbed it bits and pieces went around it only needs one cell to reproduce. Be careful with that approach, actually I’d say don’t ever do it again. Peppermint shrimp Think of Tasia is a delicacy and I’ll clean it all up and if you get real peppermint shrimp from Florida they will not bother your corals. Google peppermint shrimp and you’ll see there’s different varieties and some are coral friendly and some are coral eaters get the right one and you’ll be happy with the results and they’re fun to have as part of your cleanup crew. Colorful, entertaining to watch and get along with everybodyToday I spotted two in the tank so ordered a couple of berghias. But today, I scrubbed one off the back of a Montipora plate with a toothbrush. I killed the other with a shot of lemon juice. "They don't like it up 'em, Captain Mainwaring! They don't like it up'em!"