Ok, so here is the deal. for the longest time I had a PFO 150 watt DE MH over my tank, and everything was great. However, I had some shading in the sides of the tank, so I built a great reflector, and got a 250 watt coralvue setup with a 250 watt SE reeflux 12k. I put the new light on, and raised it up a good ways from where the old one was. after a few days, I noticed some SPS getting pale. So, I raised it up even more, and shortend the light period by about 2 hours. Anyhow, I left town last thursday and got back today, and I have lost 2 SPS colonies completely to bleaching. My largest colony is almost completely bleached (some remaining color toward its base), and a couple others are really bleaching as well. I raised the light even more (probably24" above the water surface now) and shortened the light by another hour (only on about4 hours now). I also moved the mostly bleached SPS to the bottom of the tank.
What should I do?
Why are some of these bleaching so much eventhough I raised the light and shortened the time period?
Will they recover
What should I do?
Why are some of these bleaching so much eventhough I raised the light and shortened the time period?
Will they recover