Every light has a set number of watts that it uses, and a set number of lumens that it emits. Within those lumens, only a certain percentage of them are useful to the plant. Your goal as an indoor grower is to choose lighting that MAXIMIZES how many useable lumens are produced for every watt used. MH is optimal for veg, and HPS is optimal for flower. Flourescents emit the correct TYPE of lumens, but at a higher watt amount per lumen.
Other lights such as incandescents emit a lot of heat along with a bunch of non-useable lumens, and are therefore useless in your grow.
stinkyattic Reviewed by stinkyattic on . VEG ROOM BUILDING HELP I understand that clones, mothers, and vegging plants all need different humidity and temperature. I read that most people host these 3 plants in the same room since they all use fluorescent light bulbs. Using a single room (5 feet wide by 6 feet long by an 8 foot ceiling), can you please explain how this is possible and if you need separate thermostats, humidifiers, dehumidifiers, air conditioners, and heaters for the 3 seperate stages of plant life (mother, clone, veg). I don't quite Rating: 5