It has Calcium. just checked well lets hope the flush fixed it, i guess i was pushing the babies a little to much, I guess i should slowly get it back down to about 800PPM lol
How did you check to know it has calcium? read the bottle or do you have some sort of calcium test kit or whatnot ?
This is all academic anyway as youre running 1400 in veg is more than likely the culprit, however, what kind of water do you use? tap or R/O youve probably already said, but I didnt start at page one. only reason I asked is I had a cal def in my system, like you not all of them were affected, and on the ones that were, it was only a couple of leaves, started with the olders bigger leaves first.
My nutes have calcium in them as well, Im rocking the gh 3part Once I added Calmag to the res it cleared it right up.
anyway, best of luck man !