ok I am planning on taking down my 90 FO and moving my 75 reef into the 90. I plan on building a new stand and conopy so I can put the 75 under the 90 to use as a big refugium/remote sandbed since it is mature. Now, what would you suggest as far as lighting upgrade. I am currently running 2-250 sakis and 2-vho actinic on the 75. I would really like a little bluer look, plus I am having trouble with blue acro "brown out", which I think may be due somewhat to my lighting from reading others experiences. So, I was thinking about adding 2-400 radiums into the mix, but I am hesitant for 2 reasons, heat, and burning my softies. Will going with 250 radiums still be ok, I plan on keeping all sps near the top anyway. Would I be better off to just add more vho or maybe switch to 10k? I put an ushio I had lying around in one side of the tank and I do like the look better, but I'm concerned about growth rates. Any opinions/experiences would be a great help. I won't be doing this till July probably, hopoefully my fiancee can keep everything alive while I'm in Europe for a month.