i had some leaves yellow on my bonsai plant and my dwc when the air got unplugged. maybe add a little peroxide to your waters 1 or 2 times. but they will be fine and my plizz still yeilded nicely so far. hell my dwc has nearly no leaves and is fat as hell. besides that your stuff is doing great...
peace
GROW SAFE
SIR
peace
GROW SAFE
SIR