they look very happy dude so you must be soing something right.

is that a DWC that you have your plants in?

you're gonna have a problem once you begin flowering with the new growth
on the plants that are already bigger blocking out the light for the smaller
plants. thats been my experience with packing them in that closely.

you're gonna like the bud you end up with though

check out my garden for a first time DWC grow using CFL's for light.