Suggestions:

-Get a bigger space OR only grow 1 or 2 plants in that space. I don't know what you plant to do with that MV bulb, but you ain't gonna get shit with it.
-More light! What you have there is not near enough for the amount of plants you have. To get a decent yeild, you want a min. of 50W per.sq.ft. So for 2 plants in that space, I'd go for 200W. You can use CFL's, they work amazingly well for veg, but when you hit flowering, things are going to move very slow.
-Turn that CFL bulb sideways instead of it pointing down. There is 25% more light output coming from the side rather than the bottom. We all know, more light=bigger buds.

This is what I would do, all in a nutshell. I would keep that space, grow only 2 plants, get more bulbs, min of 100-150W CFL's.

OR, get a bigger space, more bulbs, I suggest an HPS bulb for flowering. Hope this helps.

As for your leaves yellowing already, have you been giving it ferts at all?
Nochowderforyou Reviewed by Nochowderforyou on . Stelth Grow Box Hey everyone! Today I went out, bought my material, and created a light- stelth box to keep hidden in my closet. I put a small-ish fan inside its box, sealed it up, and hooked it up to a duct which connected it to the bin. Inside the bin is all tinfoil to reflect the two lights I have. Then on the other side of the bin is an Active Carbon filter. So the fan blows in fresh air and it is pushed through the Active Carbon filter to remove the smell of pot. And this will create a nice air flow Rating: 5