Update - I've become aware that pests are a concern when selling/trading corals, and I wanted to let anyone considering it know that when I got the coral the rock had two aptaisia on it, I treated them, didn't see any for a long time, then noticed they came back again (I think because I didn't get them good the first time, I didn't pull it out of the tank and couldn't see very well). Anyway, a few weeks ago when I pulled it to the front of the tank I saw those two aptaisia had come back, so I pulled it out and put in a bucket this time so I could get them really good, and I definitely hit them good this time and they haven't come back, but just want to give full disclosure for those concerned. I haven't had a problem with it in my tank, but I know in some tanks it really takes off for some reason.