Hi
@868uclgrower! This doesn't look like a light bleach because the leaves aren't curling upward neither than showing spots, they look just fine, so my guess is that you slightly overfed this plant in the last weeks with too much Nitrogen. Try to stick into the perfect pH range for hydro: 5.5~5.8, make sure your meals aren't toxic by measuring your EC each time you feed, stop any Nitrogen intakes right after the stretch has ended, and she should be fine. Hope that makes sense, keep us up-to-date and happy growing 👊