Quote Originally Posted by bigtopsfinn
600w hps has 88,000 initial lumen output.
:jointsmile:Another way i say would be to take this for example. 88,000 initial lumen output on a 600w HPS. There is appoximantly 146.6 lumen being output for every watt. Now lets say your grow area is 6X6 that is 36 sq. Feet.
This would mean that you are only getting around 16.6 watts a sq. foot. which then only turn out to around 2423.6 lumens a sq. foot. I would say you really wanna be close to about 40-50 watts a sq. foot and you will definatly have optimal growth. This is all off of a 36 sq. foot grow area, which would need bout 1800 watts for a optimal growth. If i am wrong will sum1 please correct me..

Another way you go 3X4= 12 sq. feet. A 600w will hit 50 watts per sq. foot. which yould put you around in the ball park of 7330 initial lumen a sq. foot.

Hope that helped a lil sorry if it did not didnt mean to ramble on:rastasmoke: