Let me see here:
1. Get some nice seeds from Attitude or a canadian seed supplier. Dpending on the height yo have there, a White Widow, White Rhino, Alaskan Ice and even a 12/12 from seed Super Silver Haze will produce massive yealds in a setup like that (some 400-500g wet). You could even SOG with a light like that. Specify what height your grow op has and I'll tell you what's best here. You could make a fortune with that setup.
2. Stop pulling off the leaves. Let them age normally. If you pull one off, the deficiency will immediately start to affect the next pair of leaves. Plus, you're pretty close to the end, it's normal for the leaves to yellow. Pulling them off will only stop them from givin all the stored up N to the plant and buds.
3. Those pots are too small. Rootlock may have occured in some of the plants, causing reduced leaf and bud formation.
4. It's normal for budleaves to look like claws, because maturing buds take up alot of water that they then dissipate to the adjacent leaves causing a local, yet natural overwatering.
5. Get a good, reliable fan. There's no way around it. No fresh air and co2, no bud formation.
6. If you think the tops are stealing all the light or they're too close to the light, supercrop or bend. These exercise minimal stress comapred to topping or fimming and will cause big big bud production on secondary stems.
7. Make a co2 generator. in a filled 1l water bottle mix 1tbs yeast and 2tbs sugar. Keep this under your plants or behind the vent, but never above the plants. You have to change the mix every 2 weeks.
That's all I can think of for now that would be a priority or important to know right now. Keep up to good work bro and tell me the height of the op.