Ok so 20 days to harvest. Seems like buds are sort of frozen in time now, like not changing much, is this normal? Hear they put on a lot of bulk toward the end but what is the bulk period? last week? last ten days, when? They are not small now but like I said in the end what to expect. Ok now to the test I want to do. They are at 1900 ppm now, I want to kind of semi flush by taken them down to 400 ppm for a few days then bringing them back up to 1800 again, by the way no burn at all at 1900. So what do you all think?? Thanks a lot....