I have got a good sized hydropona (horn coral) in my tank. I have heard that this coral is aggressive. Since life happened, car broke, moved, yada yada yada it has now been a problem since I have like one piece of coral per foot in the tank. But now the ducks are in a row and I am going to buy a whole ton of new coral I am just wondering how much space I need to leave for that bad boy? I would probably only have other SPS near it. Has anyone had any problems?