im going to give u a fullproof grow for begginers 600w minimum if u cant afford both mh and hps just get hps get the G.O. box from general organics has instructions from veg to flower start half nute first time and only use every other water. at worst buy ph strips about 7 bux an ph down 10 bux make your water between 6 and 7 as close to 6 as possible. if this is too hard just buy the big 5 gal water jugs they are usually ph'd perfect and use that water. if u use tap let it set out overnight so clorine evaporates. make sure there is zero light ZERO in g room during lights out an 12-12 to flower. its simple then go buy a 15 dollar lighted hand microscope from radioshack an batteries lol an wait till the trichomes look real cloudy with red speckles all throughout the heads (usually 50-75% red) of the mushroom looking trichomes if they don't have heads like mushrooms they aren't ready at all. that's all you need to do to have some pretty decent bud...o yeah THE BIGGER THE ROOT THE BIGGER THE FRUIT. doing one or 2 plants in say 25gal pots will yield more than a bunch of little ones. if I left anything out just lmk im really ripped atm