That black plastic on the bottom absorbs you light instead of reflecting it back to the plants like white would do. Time to go 12/12 in your HPS room. Your bucket bitch is getting big!! Your still having nutrient problems you can tell from the leaves, but we've already talked about that so...Keeping the top soil clean will keep fungus gnats from coming around and is just good practice to keep shit clean.
If you could do some training on that bucket you can get a little more veg time on the one thats in the orange? pot and get more bud all around. But it also leaves more time for fuck ups...and with out your nutrients down too much can happen. Your leaves are not supposed to be that green. Or if they are they are not supposed to be burned, upturned (i think thats heat issue, plus maybe from wetting leaves while HPS is on)...etc.
On the other hand your other plants under the cfl and fluorecent look like they like what your feeding them.