you running you ppm throught the roof,, 2200 is just way to high in a rdwc with a 250w light thats why you have neut problems, And you need to lower your base neuts when adding addatives & , you could be having root issues also, am running bubba island kush DWC @ 650ppm on the 500 scale in flower under a 600w light , also this is a 10/12 wk flowering strain (not a 10/12 start to finish autoflower) you using overdrive in wk 6/7 of flower ,you should be using it in wks 9/10 or 10/11 and your bigbud you should start using in wk 2 of flower till wk 8/9 or 9/10. your plants still have 3/5 (1 on the left 5/7) wks to go, i would have like to see the root zone . are you using a root inocculant ? i use UC roots, and i use UC roots&water to flush for the last 3 days. .. also when doing rdwc dont start plants at different times,cause you feeding the overdrive to the left plant thats 2 wks younger then the right(thats is getting overD 2/3wks early)..and dont run multipul strains in the same rdwc as not all plants have the same feeding needs,, and if you really wanna know when your plants are ready wait till the tricomes are 100% cloudy & starting to turn amber... hope these tips help , cheers .
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