Thank you for the suggestions. But can anyone say what makes my plants do this? What is the deficiency? Personally I think it was low GH (Ca) and high phosphates making this. Reverting to EI might (ok it probably would ) fix the problem, but wouldnt teach me anything.
Also, I cant use mist. I have plenty of water-movement in my tank. I use a filter designed for 140+ Gallon aquariums in my small tank (the spraybar fills the whole backside).
Im trying to fix this problem myself by adding different nutritions etc one at a time but some help to point me in the right direction would help Im going to add more TMG (2x dose) this week.