I don't think wattage dictates if your grow is commercial or not; I think it is the plant count. At least here, in WA, a medical state, I am limited to a 15 plant garden and 24 oz of dried, cured, ready to smoke bud, and about 70 oz of extracts. If you want to grow more then 15 plants, you have to form a collective. A collective is a group of 2-3 individual medical patients who want to grow together. We are allowed to have 45 plants maximum in our collective, and 72 oz of dried ready to smoke plant matter, etc. Here in WA it is the plant count that dictates everything, and a plant is considered ANYTHING with living roots. (including clones and seedlings) So, if you take 50 clones and only keep the best 25, be CAREFUL.