I had problems with sps fading bleaching stn,With some help I got it down to too much light and too much rowa. So I par the light got it set right at 400 at the top and aroung 120 on sand bed ..MY tank is a 40 breeder with trigger systems sump octopuss classic dwb skimmer ati 6 bulb t5 back to front is atinic ,blue plus ,coral +,blue,pink,blue. cheato in fuge bare bottom with par 38 led bulb on 24hr,controled by apex, 2 mp 10s 2 returns one coming from 1/4 chiller. 2 titanium heaters. ghl doser. Chemi pure in bag in sump chamber. My temp is 77-78 alk is 8.5 cal 440 mag 1440 phos don't know because the pos hanna always reads 0 .. I change 5 gal every few days using esv and rodi ,change all stages less than 2 month ago. plenty of rock with holes and caves for flow, about a half inch sand. After I figured I was starving the tank I added more fish and removed the rowa.. Some things started to color but still look faded. I got a few new pices and sure enough slowly decline on thse too purple bonsai stn from the back base and in the middle of the colony it fading its looks spotty like when you get bleach droplets on a shirt. My montis especially the green one is white but has lots of polyps all open and out. I feed roe, cyclopeze,marine snow,and oyster feast.I have algae in a few spots looks like this pic I got from the net. Any body that actually reads this mess can offer any suggestion or something I should do or don't do please chime in ..Here are pics I found about a year apart in this guys case my corals that don't have stn look like this my tank is 445 days old.If the case is starvation how can I feed more with out getting algae.If algae can geed why don't the sps .For the sake of my I can never get nitrates above o test is always clear. I broadcast feed 2x a week plus the fish 2x a day so corals get what falls also.