Hi everyone this is my first grow. It's about 8 weeks old GDP from seed. I'm using FF Ocean Forest soil with RO water (7ph), 6 T5s 6500k, 60-77 temp, and 30-40% hum. About 1 1/2-2 weeks ago the leaves were turning yellow so I starting using 1/2tsp/gal of cal mag every feeding and 2tsp/gal grow big once a week. Please let me know if I should try something else.
