I everybody, I post here because my plants are experiencing some trouble !
First of all, from the bigining theu are growing very slowly.
I've uploaded pictures from there leaves.
Maybe potassium and iron carence ??
here are the others pictures :
https://0bin.net/paste/WsBY2MMXRQnLhIUw#C37HJEdH14qagaHbR9SVNlCsnz9Curo3FVLQSdmBl2
or
https://hastebin.com/nipaqesovo.cpp
thanks for helping !