In the process of starting my 8+ year tank over again. Many years ago I had a nice looking tank and then I introduced a small rock with a few mushrooms on it. Well, apparently I can grow them as they eventually took over the tank. Even when I introduced new corals it did not take long for the “shrooms” to cover and overcome it. So I don’t make this type of mistake again what should I avoid? I understand this is pure opinion (as several actually liked my mushroom tank) but any help would be appreciated.