if I may :
I'm on my 3rd autopot session, auto strains too
(see my last diary with cal-mag deficiencies : growdiaries.com/diaries/159504-grow-journal-by-selkot);
the problem is most likely with your nutrient program:
what your plants need is 4ml of sensi coco bloom A + 4ml of sensi coco bloom B, and 1ml boost of Calmag. Nothing else.
It may already be too late, but I think this could benefit your crop ✌️
PS : i am on TS1000 too, keep the lamps at 15/20cm from the tallest one, no more
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