Hindu's Life

If you calculate PPMs of what you give the plant, you can more accurately deduce the answer. pH (feed and substrate itself, but typically go hand-in-hand) and ratios of nutrients need to be considered too. yellowing bottom-up, but also necrotic spots but not neccessarily onthe oldest leaves and still kinda severe. I'd still make sure pH is proper and check lables/ calculate ppms, but looks like deficiencies, and i always hesitate to say that, becuase adding stuff blindly is a horrible idea 9/10 times.

it's more sensitive in flower. Any hint of an issue in vege becomes magnified. now, you are in soil.. what is the runoff? you may not have a pH issue. Just depends. ~7 in soil is fine. a little acidic is the goal.. ~6.5-6.8, but the right balance of nutes can work at 7 too. pH will impact availability. a new ratio is needed to maintain health. It's all relative, and most of the time it can work anywhere within range of common sense pH levels for you rmedium. i think i mentioned previously, but just in case -- i have a nute spreadsheet that will take your label %s and add them all up in ppm form for you. linked in my google drive that is provided in my GD comments section. p/k/s/mg/ca/mg/zn / ?? all can interfere with each other. pH can cause issies.. it's all three that matter. a happy medium at a fairly normal pH can be had, even at ~7.

Hey man, good luck with your grow. I've bought a couple of ph testers. My first was just litmus paper. The calibration tests I did showed great results. Changed colour well with bleach and vinegar. But when testing my water, the results were difficult to determine. Not wanting to waste any more time and money on other like types I bought a digital one. Only cost me £10 from amazon. Cheap and does the job. Fairly accurate and had a much better experience. I suggest you do this rather than rely on colour charts. They can be unreliable ✌️

Hello Yes i think ph is playing a small part. But also with the biobizz bloom you're only adding a half teaspoon per gallon? At this week of flowering you should be adding around 3 teaspoons per gallon. So i think its also low feeding contributing to the leaves. My most recent grow has been underfed consistently and it has this similar yellow leaves shriveling and dying off. I also noticed my ph pen was 1 point off which is not good.