I’m on day 39 of flower.
Strain is GDP.
Nutrients: Floraflex B1-B2 / Cal-mag / mammoth microbes.
Soil: FFOF 50-50 with FFHF
Ph: okay so I think this may be my issue. I wasn’t checking my run off on my plant for while cause I didn’t know. So we i was feeding 1500 ppm (early flower stage)for a bit. run off ppm found out was 4000. So I knocked my nutes back by half. Feeding 700-800 ppm made sure I got 25% runoff. Now I got my ppm down to 1900-2000 ph was 5.7-5.8. One day during week 3 of flower or 4? I noticed the yellowing at the top of my leaves. And burnt tips. So I decided I had nute lock out. Flush with ph’ed water at 6.7 got my runoff ppms down to 500 ppm and stopped. Ph was 6.2-6.3. Now it’s time to water and I feed 600ppm 6.8 ph. Runoff was 1100ppm and 6.2ph. Am I doing something wrong? 4/5 actual grow from seed.
Light: black dog LED 600
Pot: 7gal smart pot.
Temps: 84 and 45rh
Yellowing is mostly at the top of my colas. Barley any to non in the lower canopy.