Grim,
I recently set up my ELOS 120 XL, I ordered an ATI Powermodule 10 X 54 watt. I followed your instructions as to bulb selection, I am keeping mostly SPS. I have been having problems with my coral coloration. The tank has been set up for about 2 months and I have been slowly moving corals over from my other tank that had an outerorbit 2 x 250 watt MH and 4 x 54 watt T5. Some of the corals turned a lighter shade almost white, some turned a little brown. I feel like the color in all of the corals is fading. I have the fixture about 9 or 10 inches above the water and the corals are close to the top. I have all 10 bulbs on for 6 1/2 hours and 2 bulbs only for 10 hours. I thought that was not enought photo period so I increased to 7 1/2 hours, but the corals are getting lighter. Any suggestions? I feel like the lights are pretty high off the water and I am wondering if I should keep the lights on for more or less time, and should I have the fixture closer or further from the water?
Also, I have a 30 gallon frag tank with 4 x 36 watt T5 and most of the corals in there are turning Brown, with a few turning whitish?
Can you help me? Just to add my water parameters are good, I only have 1 small fish in the ELOS and no fish in the frag tank.
Thanks, Jeff