hello today I purchased a new live rock for my aqaurium I saw one aiptasia anemone on it but when I put it in the tank and everything settled back down there are about 10 on the rock it's self I know they can sting other fish and some people say to get rid of it but will it harm my tank to the point of killing fish or my 2 Condy anemones in their or will they be ok and also is it a difference of opinion to remove them or are they actually harmful thank you for the advice