Based on what I see in your first posts, you are over feeding your plants in my opinion.
Under and over feeding can look the same on leaves. Looking at your crown leaves curling up you are def giving her too much EC, or your medium is drying up too much between waterings causing EC/PH issues.
the messed up thing is a unhealty rootzone will show like overfeeding or underfeeding. you chase things in both directions.