About eight years ago I visited my LFS and was impressed with their display tank, very nice and healthy corals with crazy sps , I asked them how do you guys get a healthy and colorful in tank .So they just laughed and said we keeping simple as possible, not too much toys ,the parameters were stable with the three main parts, AlK CAl and Mag combined with Strodium, so that i go with their way. I have a little bit of success now, of course over the years I have had many difficulties to keep the coral alive, since it also has a lot of experience .