Co2 always helps no matter what but if you look up the CO2 naturally in the air is very hi. Indoor you need a fresh air intake and exit ventilation. The stronger the exhaust the better I found. I used an old furnace fan. Just my opinion
I would Just leave it alone pruning is only good when there needs to be room for multiple plants close together or some stains when pruned correctly makes for more yield or better Bud development. Just my opinion from 29 years of experience.
Ok is you have feminized seeds they were sprayed with a chem so they are all female.
If it's random seeds you will have male and female.
If you want the best weed to smoke with no seeds you have to take the males out when they show sex.
Now you want a giant seed crop let them all grow to adults
Needs budswell. Sprayed daily light solution would help in my opinion but I always have 100 like that but usually 15 to 30 inches. Plus you don't need that big of pot for that size so if you wanted to save some space you could use smaller pot. Just my own opinion and everyone is different. God...