Sounded like light bleach until you posted a picture.
It looks like a genetic "hiccup".

Close up pic, might make a nice T-shirt.

Aloha,
Weezard
Weezard Reviewed by Weezard on . Leaves turning white What is your experience level? experienced What type of hydro set-up are you running? This is a variation of flood & drain, the sytem consists of 2 6' 4"x4" pvc tubes, with 16 2" net cups with ez clone foam plugs no medium, spaced about 11" apart. Hortilux 1K on hydrofarm mover in a ventilated hood on a 12hr cycle about 14" from the canopy. Your nutrients and water: I am using Botanicare nutes, at 1400ppm and a ph of 6.0, tap water with a base ppm of 100, 18 gal res with air Rating: 5