About 5-6 weeks into vegetation & my leaves are going from a healthy darkish green color to light green/yellowish. Using PH perfect technology (Bloom). Ill post pictures of my set up, have a grow closet 4x6 feet. Using Mars 300 LED lighting & room tempature is 75 degrees exact, room is sealed & water is distilled. Giving the plant 10 millimeters of Bloom every 1-2 weeks.
BTW my leaves aren't that yellow, just the lighting makes em look brown but they're actually quite green. Just noticing some minor light green ones popping up.
How do the roots look? Since you're growing in DWC, you can tell a lot about a plant by how their roots are doing.