lighting help

[diablo30xp]

I need a little help on to how my light should be lot of my coral are starting to bleach. I have a radion g2 and its 8" off the water surface. I have a 93 gal rimless cube... 30x30x25 and was wondering what the intensity should be at? I have 20 sps frags and 2 small conlonies...lps and softies....I have my intensity at 50% for about a month and half now plz can someone help me thx...

 

[Mr tap water]

Hi there
Here is a couple of suggestions what is your KH if it is high it can cause bleaching also how long do you run your lights at full strength and a few other suggestions is that you could experimenting by lowering your percentage of your lights by say 10% and see if you see any improvements over a couple of weeks these are just a few things you could try good luck

 

[Eastamherstbias]

Yeah what are your Stats? How long has the tank been up and running...
The lights are only one part of the equation.