Im gonna try to help you out GDad. First grow maybe? I've been researching the crap out of every forum, scouring the interweb for info for my first real grow. Invested a shit load into ventilation, lighting, nutrients, hydro, yada, yada and its paying off. You're buds looks good but they could use some help. Their too hot for one thing, see the leaves "canoeing"? the tips running down the sides of the fan leaves will point up and go inward from too much heat. Make sure you're temps are in range, and you have air circulation, you want the leafs to "flutter", not stay still, if their staying still their not getting c02. You're leaves do look on the yellow side but i'm a newbie when it comes to nute deficiencies and yellowing. However, I do know my plants loose their dark green color when they are being flushed with straight water-no nutes, and getting ready to harvest. Jorge Cervantes grow dvd and books will help you out a LOT, once i saw his dvd i realized all his info is in these forums, its just a pain in the ass to find it sometimes. I'll also confess that i used MG seedling soil(comes without nutes) in 2.3gal pots, doesn't drain worth a shit, and holds water like a bitch. Definitely flush them, and buy a $30 starter kit(technaflora)recipe for success. It's the best bang for you're buck. and sorry for the information overload