<a href=showthread.php?s=&postid=8878985#post8878985 target=_blank>Originally posted</a> by Hormigaquatica
All stony corals sting, and should never be less than a few inches from eachother. Your Caulastrea is generally less agressive than many other corals, just be careful that it doesnt get stung by whatever you put it next to.