It takes money to make money.

Are you going to buy a system or build your own. If you have never built a system before I suggest you buy one. You will need a good Ph pen and TDS pen as well, plenty of light HPS, air movement, AC and odor control. If you want to make money you also need CO² to grow faster and larger buds. You need a good mother or two as well because from clones you can grow faster and flower faster then from seed.