I had to do a double-take on that stylo one. I started my tank a few months ago and have kept montipora, seratiapora, pocillopora, and stylophora with no problems. I have one blue tip staghorn that has receeded from the base and under some branches(noticed after I treated for cyano). I don't see red bugs or anything. I just have to see how it will fair. So far it hasn't receeded anymore, and the polyps are emerging further.