I have never had good luck with soft or hard corals. I always have been told that my equipment was good, good water quality, but eventually I would lose them. I'm now down sizeing to a "24G Nano Cube Deluxe" model #7051. Comes standard with two 60 x 60 mm cooling fans, (2) 36 watt combo bulbs and remote ballast, 290 GPH. Are there such a thing as bullet proof hard or soft corals?