Bananas.org - View Single Post

LilRaverBoi · 06-08-2009, 01:58 PM

Well, basically, HPS produces a more red spectrum of light which is optimal for flowering/fruiting. MH produces a more blue color spectrum of light which is best for vegetative growth. IMO the best systems are the MH/HPS conversion systems that have bulbs for both so you can grow with MH and later switch to HPS at the flip of a switch. However, since you already have the HPS system it would be a waste to buy that. MH is probably a better choice for vegetative growth. 400-600W is probably sufficient...1000W is better, obviously but it will cost more initially, bulbs are much more expensive and electricity bills will be higher. If cost isn't an issue, by all means go for it, but for most of us, cost definitely IS a factor. If you're just growing a few plants, 400-600W will be plenty.

06-08-2009, 01:58 PM	#11 (permalink)
LilRaverBoi Nanner Time! LilRaverBoi's Photo Gallery Location: Cedar Rapids, IA Find me on the map! Zone: 5 Name: Bryan Join Date: Mar 2009 Posts: 2,937 BananaBucks : 160,325 Feedback: 0 / 0% Said "Thanks" 534 Times Was Thanked 2,243 Times in 1,245 Posts Said "Welcome to Bananas" 855 Times	Re: Metal Halide vs. HPS Well, basically, HPS produces a more red spectrum of light which is optimal for flowering/fruiting. MH produces a more blue color spectrum of light which is best for vegetative growth. IMO the best systems are the MH/HPS conversion systems that have bulbs for both so you can grow with MH and later switch to HPS at the flip of a switch. However, since you already have the HPS system it would be a waste to buy that. MH is probably a better choice for vegetative growth. 400-600W is probably sufficient...1000W is better, obviously but it will cost more initially, bulbs are much more expensive and electricity bills will be higher. If cost isn't an issue, by all means go for it, but for most of us, cost definitely IS a factor. If you're just growing a few plants, 400-600W will be plenty. __________________ BANANA RAVE! Feel the beat from start to stop, dancin' and movin' from bottom to top! lilraverboi@genxglow.com RIP Tog Tan. We love you and will always remember you! I'm Bryan with a Y! There is no 'I' in BRYAN!