[hunggi74]

OP the algae you have is Dinoflagellates. I had/have the same issues and also use AF Reef salt. My nutrients were not in balance as my NO3 was anywhere between 10-50ppm but my PO4 was consistently low at 0.028.The worst thing you can do right now is water changes. The algae thrives on the trace elements in salt mix. I also used Comp123 and that has trace elements in it. My corals were being suffocated by the Dinos like yours are. I tried first a 96 hour blackout but that didn't faze them and only made my corals pale and my fish delvelop ich. I ended up getting some Dino X and dosing as per instructions. 21 day treatment max and then you have to stop dosing for a week. During that treatment time you syphon out visible dinos in tank and reduce your photoperiod to max 5 hours a day. So far after first full 21 day treatment my dinos have been reduced significantly. I still see some, but I'm hoping to be able to rid them by manually syphoning and by balanced nutrient reduction. I have done one water change since last treatment using the AF salt I have remaining. I don't dose Comp123. In fact, I don't dose anything now into tank except Alk. I don't want to do another treatment phase of dino x as I think my corals wouldn't be able to withstand another agggressive round of dino x. I lost a handful of pieces and the remaining corals are all brown to browner. Hoping to color them back up over time. After reading this thread and hearing horror stories about AF salt, I too will be using either IO or RS henceforth. Hope this helps you or anyone else going through the same issues.