hey there casebone the drop in the EC is due to the flushing nutrients and that's normal and to be expected. Dont worry about it, what's the point of the flush except to reduce PPMs of the solution and the nutrients in the plant right? bad news is the microbes also go down and die so dont bother mixing them with the flawles finish. Hope i answered your question ! congrats on the great grow and harvest ! 👊
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