Yellow leaves

try feeding some nitrogen and adjust PH to 6.4 also use some cal mag with every watering and your plant should be fine in no time 🌱💚

@organic_G he is in coco/perlite not in dirt PH is different hydro vs dirt. But you are right there is also calcium deficiency going on. Get an calmag agent, together with the Nitrogen deficiency i would go with one where the first number is 3 meaning it will also contain high amounts of N. PH in coco/perlite as an hydroponic should be 5.8-6.2 nitrogen is always good accessible, for Cal mag absorbtion you want it to be 6.0-6.2. Quickest way to get it where it needs to be would be with a foliar spray, wouldn’t really recommend because you already got some flowers but there are people who do spray till week 4

Hello mate, i see your diary and you have ever the pH at 6.5 in every week, you should have this value at 6.2-6.5max. I think you could have an issue with the pH in the soil that cause some other problem. I see also some spots on the leaves that seems a Ca/Mg deficiency, try to fix the pH first then if you have the same pois on the leaves try to feed with Ca/Mg product. Good luck and happy journey!!

Looks like she didn't have enough nitrogen before entering flower.