coco experts pls help!

first is top growth its still recovering from the bad ph and my attempt at high potassium nitrate. Was going for hgv grow formula numbers 3-6-22, I was at about 4x potassium to phosphorus and it looked ight so me being a risky guy said fudge it and tried upping it and went about 6x. They didnt like that started making way more of that frosting. Its not salty and dry on the fresh growth it does feel like trichs/resin. Why I said salt is because on the older growth that isnt happy they begin to dry out and what was sticky dries out as well looking like salt and looking sad. Bottom pic is new growth, they arent drying out and not producing much resin just looking nice and healthy, I plucked the larger ph affected leaves. Plants 3 weeks from seed got transplanted to 2 gallon from solos on sunday night already have roots out the bottom 1.1 ec 5.6 ph

Also pro tip, throw a layer of hydroton on top of coco. Never had a gnat since plus it keeps the top moist so it doesnt dry out faster than the bottom. My pots have been drying out perfectly