I have this here seedling. Bagseed. Using ffof. Under a t5 light. I let her dry out real good. Watered yesturday. Ph'd water. No nutes. Seems to still be growing decent, but the first set of true leaves have started to turn yellow. Is this a problem starting, or is it one of those leave it and let it grow out type of deals. Anything would be appriciated.