I am new to this forum and have been keeping salt and freshwater aquariums for years. I just switched to LED lights for my 37-gallon reefish tank. I have a large damsel and a bunch of mushroom coral. The coral was doing great under my T-5 Fluorescent lighting. About a month ago I purchased an Ocean Revive Arctic T247-B Full Spectrum Dimmable LED Aquarium Reef Light. The aquarium is 21.5" deep. The light is suspended 5.5" above the rim. Since installing this light my mushrooms have not opened completely. The seller (a company that sells coral and anemones and say they use this light) told me to put intensity for blue channel at the lowest setting (1) and white at 5 (out of 100). I have left it there for 2 weeks with little change. I have tried LEDS before and gave up. This is the most expensive light I have purchased ($170). Any advice would be appreciated. I never had any issues with the T-5. I have attached pictures.