Leaf tips turning yellow late flower before starting ripen.. why?

Salokin Thanks bro, I was wondering if that stuff applied to dwc. And thanks for advice I appreciate it!! Happy Growing!!!

Organoman Hello! Thanks for the help! I was following the gh feeding chart so I didn't cut gro nutrient out until week 5. Is it normal for feeding chart to be way off?

CULTIVATORFROG Hello, and thanks for chiming in! I'm not sure where u saw Purple pistal. I'm going thru the pictures and I haven't seen that. I do have a question. Is the 6.2ph recommendation for dwc? I thought in dwc u target 5.8ph. Or this something that u change to 6.2 ph in late flower to help with phosphorus uptake? I appreciate the help bro!

JUNGLE_B4RNS. Thanks for chiming in. But I'm doing dwc.. no soil? Not sue this applies to me

I agree with Organoman, everything they said on point.

Yes, plants still need good amounts of nitrogen during the first 2-3 weeks of flowering. It is a common mistake to switch to bloom as soon as there are only a few pistils in my opinion/experience. I always continue with "grow" for the first 2 weeks of flowering, before changing to half "grow" and half "bloom" for the next10-14 days, before finally switching to straight "bloom" for the final phase through to finish. I also start with a P/K booster around week 2 as well. I have done this for 30+ years and believe it produces the best results for me..........organics in soil.

Hola he leído su diario y veo que su ph está un poco bajo en esta semana de floración yo lomantendria en 6.2. También noto peciolos morados que es producido por la deficiencia de fosforo. Solo ajusta el ph para que tu planta pueda absorber fosforo y potasio de manera más efectiva. Las puntas de las hojas no volverán a tomar color pero podrás detener este problema

In a nutshell it’s nutrients burns. If you really want to know why your tips are burning, it’s because the salinity of the soil is to high, turning the osmotic pressure of your medium into an hypertonic condition, the fluids from the plants get sucked out as the pressure is higher on the other side of the cells membrane of the roots. See the Applications here: https://en.wikipedia.org/wiki/Osmotic_pressure