Question about light set up / lumens / how many lights / Coverage?....

My green house pics are in my gallery. It's 9' long x 6' wide by 6' tall. I plan on redoing the roof to make it V in the center which is where the carbon filter and cooling hoses will go. Probably 8' tall in the center when finished. After researching it looks like I need to have around 150,000 lumens for optimal growth. (please verify) I was thinking of 3, 400 watt hps placed directly down the center of the roof width wise. One light per two plants and wrigging up some kind of pulley system to control height. Will one of those lights span 6 feet? I'm not sure how wide of an area the light will cover. Any advice is much appreciated.

Thanks! :thumbsup:

are you using this as a supplement to sunlight ?I only cover a 3x3 area with a 400 indoors.

ok looked at your pics....no sunlight. i would suggest 2-1000 watt HPS if your going to grow trees.