Im using lush and ocean floor for soil. These are 7 weeks in 24on veg and planned on going to flower but this evening when I got here I have a few plants that are bright yellow and green. Il attach pics. The only thing I've been adding to their water is cal-mag. Is this a nutrient deficiency, lacking something, too much of something, sun burn? Please help.
If you only fed CalMag then they're probably hungry. Have you been giving any Nitrogen. Phosphorus and Potassium? Lack of N will cause yellowing starting at the bottom and moving its way up the plant.