40 lumes per sq foot? light question for professionals
Posted: Mon Aug 23, 2004 1:29 pm
ok i was reading up on lights to choose and the majoriety of sites tells me to use a 400W MH or HPS in a closet space but in there teachings they say to use 40 lumens per square foot, oddly enuff the room they using is the same side of minz 8ft high * 6ft long * 3 ft wide so thats 144 square foot
no i times 144 * 40 lumes per square foot = 5760 lumens bulb i need to get then, so i found a site that has a 70W bulb that pushes that check it out www.amerilamp.com/metalhalide.htm, My question is why are they using 400W unless this is a new bulb?????
no i times 144 * 40 lumes per square foot = 5760 lumens bulb i need to get then, so i found a site that has a 70W bulb that pushes that check it out www.amerilamp.com/metalhalide.htm, My question is why are they using 400W unless this is a new bulb?????
