Greg,

You are absolutely free to do as you please. BUT.

If you re-read the above posts, you'll see that much of what you are doing isn't really being recommended. If you read between the lines, the answers to your posts are basically: "...well, if that's what you want to do, then do this...".

The way I see, you had a large fish die, and your tank started to crash. This freaked your other fish out, and they got ich.

The solution that -I- would use, is simple: Fix your chemistry problems, feed your fish WELL, and do regular water changes to keep nitrates down. Happy fish = no ich. It's THAT simple. Frankly, I wouldn't use Melafix or Quick Cure on a bet. But then, what the heck. I've only been keeping SW fish for 35 years.

BTW, while it's primarily SPS that won't survive the high temps, other corals aren't particularly fond if it either. That being said, my tank occasionally gets to 83...