this looks too clean to be aefw. if your par is good, and other sps are doing fine, then my guess is water flow. unless you find the problem, fragging is just masking the symptom.
Like i said your water quality isnt up to par yet for SPS. it takes alot of hard work,right flow,STEADY parameters,great skimmer,alot of reading and perfect lighting. By using API tests and red sea even though they are getting better it showing you either did not really learn about SPS or you are getting bad advise from someone. Your coral probably didnt bleach it probably is dead. SPS is not for someone who just jumped into the hobby and put corals in the tank. You need to really figure out and get the very best equipment,test kits and maintenence routine down and figure out how to keep your tank stable before you buy anymore. You might have some short term success with some pieces but in time if you dont fix whats going on and research like crazy not just over the web or listening to someone but actually getting books and reading you will not have any success