I would like to point out that this is my first grow.I made some mistakes but I can say that I could correct them at least partially or?

Genetics, genetics, genetics.............all you can really do is provide the perfect environment so that the plants can display their full genetic potential. There is no magic formula to add something that will grow Hero buds on ordinary plants. Using a P/K booster and some humic/fulvic/amino acids can help the plants to display their full potential. Great lighting is also essential, as is having a green thumb! CO2 bags are largely a waste of money unless you are growing in a sealed system.

Looking good. If your environment and feed is locked in and on par its going to be up to the genetics to flourish and make big sticky icky buds. Adding products into the mix to make it happen is not how its done, some use PGR's and that can increase density of buds but they are a bit taboo and banned in a lot of places. Best to stay away from them. Maybe try getting a clone cut of a nice strain and see what you can do with it. Growing out a seed that has average genetics will never yeild quad a buds no matter what you put into it. Can still smoke and make edibles from less desirable plants with low bag appeal, just control your expectations Also unless your tent is sealed up in a closed system CO2 is a wasted product, save your money and don't add it in till you have a propper setup. Extra CO2 leaking into your living enviroment is also not good.