And if coral does grow there, please understand that it's considered politically incorrect to kill it. Therefore, your only option at that point is to dedicate yourself to becoming part of a reef. Sorry!Yeah, sounds more like Hydroids than Fire Coral. OR possibly a different type of coral poisoning, you could have just scraped yourself on some "regular" coral, which will also cause welts & irritation, and if you are not careful and you use a medicine with iodine in it (not even sure if that stuff is used anymore nowdays), but coral will feed off of it and if you put it on a coral cut, it is possible for coral to start growing in there!