that wiyh veg rightHey man. I used a 70w HPS combined with a 100w CFL and grew 2 plants about 3 1/2 ft tall. The yield was not the best and I think it took 4 months or longer... but it worked. You just gotta get those bulbs literally 2" from the plants. Also, the lower branches hermied with little white seeds on some of the smaller buds because there wasn't enough light
just another thing to keep in mind.
:: power puff and pass to the left ::
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sooooooo 140w hps+3 42w cfl 2 40w cfl is not enuff 4 2 plants what tha hatii use a 150w hps in a cab on 1 plant. the cab is about 3.5 sq feet. i am having good results but i dont think you have enough light
you "Think" it took 4 months or longer?? How could 2 plants take four months? You sound nuts. I could of grown 2 plants at a time and finished 4 plants in 4 months. Depending on what strain really but most strains finish in 9 weeks or 2 months... theres a few 9+ weekers
You have enough light.... just not enough for amazing results. Don't split hairs with what people are saying. If you want a GOOD yield, then 400w minimum. If you want a EXCELLENT yield then 600w - 1000w. You will probably get an 1.5 ounces dry with 2 plants and that much light. But if you had 400w on them you would probably get 3 or more ounces.