a I had a bad red algae outbreak in my 75g tank. Did a massive water change about two weeks ago using DI/RO setup. Been sucking out what algae I can find with a tiny hose off the corals and looks like its dying off. Going to do another water change next week (unless you think I should do it sooner) to help combat that algae even more.

So... suggestions on how to recover my coral and let it thrive again? Most coral stuck it out by some polyps died, my colorful polyps are still not opening and my torch won't open either. I have been adding a little extra liquid food for them in the tank in hopes to get them to come out. Now, I am not sure what to do to help them survive and look like they use to.

Any suggestions would be appreciated

Oh, how does that algae thrive and grow? What did I do wrong to make it thrive like that?