Yes I was actually thinking of saying that but thought I would leave it alone until it was just brought up. Frogspawn, hammer, and torch corals are in the same family and seem to be equally potent. I have all three in my tank and they all three touch each other an ocasion and when the torch reaches out to sting the frogspawn it retracts a little then after an hour or two comes back.
I would be cautious of all these.