Thanks guys. I am watching this one discus, hoping it pulls through. It color isn't right and it has itself wedged up against the aquarium wall, so I don't know. On the one hand, it is good that it has itself where it can stay upright, on the other, it may just be prolonging it's suffering. I have good aeration with a powerhead in there right now and tomorrow once they have had a bit of time without too much stress. I will get a bigger air pump going with a large 18" airstone set in the middle back of the tank.
Thinking about it, the water changes is probably what saved the majority of the fish though. I always off gas against the back of the tank above the water line, so the extra O2 it was putting into the tank due to agitation kept it from being completely depleted. I also thought about when I moved that giant val out, I took out a major O2 provider. I had no problems before that with O2 depletion. So for those of you who have planted tanks......If you remove a large amount of plants, supplement with aeration.