The leaves are burned, now the side of some leaves...

Hello @resit! You are spot on with that potassium deficiency causes the brown necrosis(death) effects on your leafs! You are also correct to give her Banana peel tea as it contains Potassium, phosphorus, and calcium! In an organic environment its VERY important that your soil stays happy with microbial life and is able to naturally break down and Adjust the PH of your watering feed. If you have not taken care of your soil and are unable to get additives to boost your microbial life then I highly suggest PHing your water before watering the plants. Simply give more Potassium and get control of your soil's PH and you will be on your way to recovery 😎 ---- In regards to you N toxicity the damage from N toxicity will never go away so if you have adjusted your Nitrogen levels to be lower already then your fine! Hope that helps with your question!

Hello! I think you are right, I see a potassium def and the signs of an old nitrogen excess. Maybe you should grab an organic fertilizer as even if your nutrition is good you can't measure your nutrient amount which can lead to that sort of excess and deficiency. If you can use a PK boost to provide more phosphorus and potassium and less nitrogen it would be perfect, a ppm/Ec pen to check you fertilizer level would be better ! I hope it will help you 😁✌️🏼