Thanks for all the replies and help.

Will give quick update since that time a few days ago. Upped nutes ever so slightly (never going over 400) over next couple of days (having flushed all peroxide). Got either root rot or big globs of nutes on roots again (they looked very weak and stiff and sickly). Flushed with peroxide again and have been running 1 tsp a gallon for two days with no nutes.

Here are pictures from the last few days, last two from today. They are showing new growth and leaves are standing up again some. Maybe not out of the woods yet, but getting there.

Will update again soon. Thanks again. Wheezey