thanks jaw that's what i was looking for..i've been feeding it General Hydro 3 part....
the problem popped up last week...the week before aug 15-21st...i fed it 3 times with a 0,1,3 of GH...(feed water feed)when it first popped up it was just yellowing between the leaf vain.....within the last 3 days more leafs started turning like the ones in the pic....last tusday i bough some magical and fed it...then flushed it on wednesday and refed the plant on friday...with a 2,0,2,4 of GH...(2tsp mag,0 grow,2 tsp micro,4 bloom)
since the flush the problem picked up speed even after the feed on friday..yesterday i wated with somemore magical at a ppm of 170