AutoPot - Think Different & Auto Amnesia

Day 80 - I am seeing recovery from the last couple weeks. Somewhere in November, I had root rot and/or nute lockout which made my two of my plants sick. I decided to do a full top feed flush with florakleen and added nutes/bennys to help them recover. So far, it seems the Think Different has recovered nicely. I have taken them out of the autopot trays and will be top feeding, from now on. Think Different 2 - Now my best plant, is still green and has white hairs (maybe 20% orange). I decided to flush fully (20% runoff) with PH water, every day or 2, to remove any of the synthetic nutrients prior to harvest. I am thinking in the next 7-14 days, this will be ready to harvest. Looking for 70% orange hairs and cloudy trichomes. 1.) Flushing to 20% run off with 6.0 PH Water (no florakleen until the very end). Run off PH is around 550PPM - Is that expected? Will it eventually go down to 100PPM or my tap water level as I flush more? 2.) Is it normal to start to see the green leaves up top wither or is this another deficiency? I know these will start to turn yellow as I flush but this seems to be shriveling. Should I just keep flushing or adjust? Think Different 1 - This one is a week older (but stunted) so I am seeing more hairs. This went through some light feeding the last week as I saw some signs of root rot but definitely nute lockout. She looks much better but most of the leaves up top are withering. I am thinking this is going to also be chopped in the next 7 days (maybe sooner). 1.) Really watching out for bud rot or banana as I do not want this to hermie on me. Is that a concern? I notice my top bud is getting fatter week over week. Wondering if that is a result of light stress or because of recovery? Does it look normal? 2.) A lot of the sugarleaves up top are brown. Should I keep removing as much as I can? Seedsman Amnesia Auto - This poor one had the worse root rot of them all but the flush really helped as it is getting greener but also not smelling. I am thinking of chopping this early to, to prevent any other issues but I do want to flush and also see if it will recover more. I also fed this some light nutes after flushing to help recover. 1.) Should I cut this to prevent any issues from this to spread to my other plants? I am flushing because I have been using synthetic nutrients and feel it is necessary to get rid of it and get better taste. That said, I know people feed til the end and was thinking of feeding the sick ones to the end to let them recover as much as possible before harvest; however, I am concerned that will sacrifice quality. All in, I love how these Dutch Passion Think Different strains handled a first time grower as myself. I made many mistakes and they kept going. Cheers and hoping that this becomes successful. I feel I will have something to harvest. Would love anyones feedback/opinion on next steps and what else to watch out for.