coral dieing

i had bought 4 sps corals that are supose to be blue in color 1 off the top of my had is a solar eclipes. as you can see the middle 1 is brown and the 1 on the right is starting to change. all prems are good. heres the pic.

 

Lighting is usually the #1 color changer in SPS.

However it could be either your phosphates or nitrates are too high

 

i hate to see that z, tell us about the tank how old is it and lighting, what type and all, i would like to try and help

 

tank is almost 10 months - 11 months old. i have mh at 500w and 4 t5 at 54w actinic. the lighting is at least 21in away from the lighting. the corals are acropora of some sort.

 

what color spectrum 10 15 20 k. first place the frags on the bottom. place in med flow, check cal, alk and mag levels, ckeck ph , now what i'm about to say is something that can kill the coral or save them i would say 50 50 chance. in a container place 1/2 gallon water from your tank and 20 drops of strong iodine, logols solution is what i use, place the acros in the dip for 15 mintues and place them back on the bottom of the tank, i believe what is going on is light shock the iodine will help them adjust to the light. the longer you wait the less chance of survival.

 

color is 15k and 6500k for actinic. 2of the 4 are soing great. all my prams are on the money.