3x3x5 tall room

[jack of all trades]

i have a 400 mh an 2 -70 hps can anyone tell me how many lumens per square foot that is

 

[PUFF MONKEY]

are you asking total lumen output of those bulbs or LPF in a 3x3 area ?

 

[jack of all trades]

trying to find out how many lumens per sq foot i have in my box with these lights

 

[burnin123]

roughly 70k..that 400 alone will do your 3x3. then add the HPS when ya flip..just my thaughts

 

[PUFF MONKEY]

5488 Lu per sqft@ 12" ...total out put is 49,400 lumens

 

[PUFF MONKEY]

if you swap the 400 mh to a 400 hps come flower time you'll be alot closer to the 7,000 lpf target.

 

[jack of all trades]

would i still get 7,000 lpf if i use a converstion bulb

 

[ozzydiodude]

Most 400 MH to HPS conversion bulbs have 53,000 lumens plus the 12,600 lumens from the 2 70 watt HPS =65,600 lumens divided by 9 ft2(square feet)=7289 lumens per ft2.
Be sure to have plenty of ventalation