The green fishes are called green wrasses,my terrible twins,bought them together. The raito is 24/24 blue to white and a row of 11 to 12 xpgs to give it a high noon blast and it is dead silent,not the same as the ballast where you hear a hum. The depth of the tank is 31 inch,one of the reasons my buddy recommended 48 LED xpes the newer generation of LEDs. No problems with depth with LEDs,it can really penetrate and grow sps on the sandy bottom,is it 50 to 60 watt per fixture?not sure yet but it is less than the 250 watt MH that I was using and more powerful. Thanks reefsahoy,its coming along and one of our goals was to cut the cost of maintaining the tank especially with the rise of electrical bill and unhook some unneeded equipment like the chiller. I will LED my 120 for the next sps tank with same ratio with two HS. SHimmer! I would say of course and the beauty of LEDs are you can control them like as if you are going through overcast to full sun.