The decent sized ones died last week and were removed a week ago. Some smaller ones were just removed yesterday. I was hoping to save some but doesn’t look like it now i down to 3. Could those big pieces removed a week ago still keep the ammonia that high?
I'm sorry to hear that the corals are toast.
I doubt you're seeing ammonia from coral that's already out of the tank, but depending on the kinds that just came out, there could be some. For example a fleshy coral like a leather or lps is sort of like a shrimp that is thrown in the tank to start a cycle.
Great to hear that you're down from 8 to 3. Heading in the right direction. How did you get there? WC or did it get converted to NO2?