Nute burn?

I believe that K deficiency is the answer even more now because as it progresses the inside of the leaves are yellowing a bit, it is only effecting older leaves, and Qookies is feeling it more - she is actually 2-3 days older than Grape. Hopeful that the next nute stage will fix the problem, thanks all!

You know, I think that there is a chance that K deficiency is the problem. It’s really hard to tell. I just updated my week 5 to show the nutrients I just started right now which has 2.25ml of bloom per gallon. I am using this feeding chart: https://www.cocoforcannabis.com/mixnutes/ I mixed too much of the “late veg” nutes and was trying to let them finish it off. There was still about 2 gallons left but I just dumped it and cleaned my res, then added the new nutes so we will see what happens. This also was really my plan for nute burn anyways so hopefully it works itself out!

In my mind you should. I'll leave it to hydro pros. But you should ask for advice ! Good Luck !

100% nute burn You hit the nail on the head and answered your own question. I would scale back on the concentration of your feed just a bit. seems that one is a bit more sensitive to it. I'd also check the run off PH and PPM/EC to confirm its not building up to much. If it is, a quick flush will help yea out. Use this reference for autos if you don't have one on hand. https://www.autoflower.net/forums/threads/med-man-method-feeding-chart-ppm-ec.47856/ Best of Luck and Happy Growing!