Some deficiency - need help!

Thx for answers guys. Last two watering I used pH balanced fresh water. What about phosphorus and potassium I used green house feeding bloom booster. I'm just waiting for results. But new damaged leaves doesn't appeared yet.

Ciao amico! Vedo gli steli molto scuri, e questo non è un bene. Essendo alla settima settimana la tua pianta ha bisogno di potassio e fosforo. Probabilmente se i gambi delle foglie e il tronco fossero rosse o viola, avrai bisogno di integrare più fosforo

https://growace.com/blogs/learning-center/how-to-fix-nutrient-lockout

https://www.botanicare.com/faqs/can-i-foliar-spray-with-cal-mag-plus/

Flush and clean water to remove nutrient lock up. Then I would do a foliage spray of mag Cal at 1 tsp a gallon to get the trace elements into the plant ASAP. Your PH should be 5.8-6.2

Funky nutrients. .. it started as tip burn then moved on . Hence why I stay with advanced nutrients base allways every grow every plant 15+ years now .

If you need any other help shoot me a DM' Your inbox Is the little green arrow in the bottom right hand corner of your screen. Good Luck!

Your feed is to high causing lockout and making it looking like it is deficient. Autos like a lower concentration of feed vs a higher amount. Photoperiods can take the stronger feedings and that's what most bottle nutrient schedules are made for. This link is a good reference for feeding autos. its not 100% so if your plants need less or more listen to their needs. https://www.autoflower.net/forums/threads/med-man-method-feeding-chart-ppm-ec.47856/ Try giving them just water for a week, if possible, run a flush in the medium. Soil is very easy to over water so be careful not to drown the roots. Good Luck!