Good work Santa,

I am a soil grower so I am completly unfamiliar with hydro, but I can tell you need to trim that yellow leaf near the back. It looks to be not doing any good for the plant anymore.

8 week veg under cfls correct? I didn't see where you mentioned your lighting only a pic I saw with cfl's. If so do you plan on more cfls, the larger your plant gets the more lights it is going to need.