Mag Def? PH?

[Tyga]

Not sure what this could be... This clone is showing it and also a couple of my other plants.. No nutes yet. Being fed store bought distilled water.. haven't checked the PH because it's usually on point out of the bottle. Not sure if it's a def. because they are all in FFOF which has plenty in it for veg for at least a month or so... and these are only about 2 weeks in. A Little worried because this cut was gifted by a friend and I have big plans for it's future!
Ps. the leaf crumbled like dust when I touched it..

 

[SeaMaiden]

Looks like a combination P & K issue to me.

 

[joe fresh]

to me it looks like oh issues or salt build up...a quick flush and repot should clear uo the probs...then continue with reg schedule on ferts

 

[SeaMaiden]

Joe, lose your P key?

 

[Vampire]

looks like fert burn to me; ffof is known to be to hot for clones and seeds and should be cut with a cooler soil, like happy frog or any quality potting soil. Good luck mang.

 

[Tyga]

True, thanks guys. I usually water them till i see RO so im a little suprised to see any salt build up. But im going to transplant them into 2 gal. Pots tommorow and do an ocean forest happy frog mix with some perlite and see how that goes.

 

[Tyga]

Thinking about removing some of the burnt leaves so I can keep track to see if the problem is solved... transplanted all of them into 2 gal. buckets yesterday 60% FFOF 40% perlite mix.. hopefully that will flip them around.
Also a clone I received from a friend in the last 2 pics seem to be shooting white hairs like crazy even though lights are on 24/0 whats up with that.... You guys calling Mag def? or Over fert? There still just getting plain PH'ed water.