Tank was doing great until I had a heater malfunction which raised my temp from 80f to 96f in about 8 hrs while I was at work. I bought a new eheim jäger heater and temp has been stable since at 79f. The malfunction happen back beginning of November which led to all sps eventually bleaching and dying. I waited a few months before tryin any new sps coral and now it seems no matter what there tips bleach then slowly the coral totally ends up bleaching. My parameters have all been good and stable. I have an Orphek Atlantik led so all coral starts on my sandbed for light acclimation for a couple of weeks. Before having this heater malfunction any sps I put in thrived very well. I have 2 small tridacna clams that survived and are doing well and even growing which some local reefer finds strange that my clams are doing so well yet I can't keep sps coral anymore. I will attach a pic of the tip of a frag I recently acquired that tips look chalky which I believe may be the beginning of its demise. Please any advice as I miss having sticks. Sorry for such bad pic LEDs and iPhone camera without white balance makes for very blue saturated pics.