Even if you are planning on growing cannabis on a fundamentally small scale, you are still going to need a high quality lighting setup to provide the plants with the light they need. This is where things get a little complicated as exactly which lights you will need to invest in will be determined by how many plants you grow, the types of plants you grow, the size and nature of the growing environment and so on. As a rule of thumb, it is said that 250 W of lighting are sufficient for 1 to 4 plants, 400 W will do for 4 to 9 plants while you’ll be needing approximately 600 W of lighting for 9 to 16 plants. Quality of lighting is also just as important as quantity, so once again it is advisable to buy only from the most reputable manufacturers and suppliers.