Now that I am no longer dosing ammonia via water changes and topoff the tanks are considerably improved. The brown slime is gone (in two days), the cyano has nearly disappeared and the hair algae is waning. I have started to feed the tanks again and have not seen any response by the algae. Some of the LPS corals were definitely hurting without feeding since August. I expect to get more aggressive about feeding slowly. The green bubble tip seems unhappy with the ammonia reduction and the frogspawn is partially retracted most of the time for the last week. I'm disappointed it took me so long to figure out the source of the ammonia/nitrate problem.