First Grow

1st pic is in week 3 of flowering, 2nd pic is in week 4, and the 3rd and 4th pics are from week 5 of flowering.

What kind of lights you have on those?
Any particular strain?

4 23W CFL's. I'm thinking of purchasing 1 or 2 higher wattage bulbs to replace the 23W'ers.

I dunno what strain.

It would help your flowering results big time to get more lights...
Could you purchase a HPS or something more powerful than CFL's or are you on a tight budget?

Yeah looks like you could use one of those HPS lights!