Re: whats growing on my live rock?? Peppermint shrimp should eat the smaller ones, and keep their #'s in check. As for the bigger ones you can use a syringe and inject the stalk (not mouth) of the anemone with either lemon juice (will drop pH it is an acid) or calcium or kalkwasser (will raise pH). After this just let it die and siphon out the gray mess. |