I have another problem now. Dino's and GHA, again nothing changed but silica went up. I have tried every thing from natural reducing nutrients to adding chemicals. I know adding two chemicals together which is not a good idea, I dosed Dino-X and Flux-RX and one of my sps polyps looks liked it melted.
I did a large water change and added carbon for a week and some of my sps is still alive but the algae is worse now. Of course the Dino's is killing some of my other corals. Well I am going to do it again with Dino-x and this time with Algaefix. I just hope I don't loose to much coral. No one on R2R can help me, just got the normal fixes but just not working in my case.
If this does not work I will just have to do a rip clean on my 75. Removing sand bed and scrubbing rocks and going BB. I hope your tree bounces back.