I moved a bunch of corals into a larger system. We had a small toadstool, finger leather, fuzzy mushrooms, and various LPS/SPS. The water quality was good, kept up with maintenance, had a skimmer, great flow, and T-5 lighting. Nitrates around 12.5/25, dKH 9, etc. The toadstool grew like crazy, leather and mushrooms just disappeared, monti grew like crazy, and frogspawn got huge. It depends.