OK, day 10. No symptoms remain. All fish are doing MUCH better. Nothing else has passed. My giant gourami is healing up well, it split alot of fins during the illness. Im still not sure if it was velvet or epistylis, but the Microblift product did the job for sure. Its stinky, but apparently effective.
Day 10 and Im doing my last 'medical' water change.
THANK YOU SO MUCH FAM for the input and expertise!