![]() |
#31
|
||||
|
||||
![]() Hi,
Typically (not all lamps and ballasts are the same...but usually for 5500K), 175W MH draws 2 amps and produces 12000 lumens (8000 lumens over 1000 hours). 250W MH draws 3 amps and produces 20000 lumens (13000 lumens over 1000 hours). 400W MH draws 4 amps and produces 33000 lumens (22000 lumens over 1000 hours). So...you get about 60% more light with 250W over a 175W. As for the 5500 lumen part...I think you refering to the colour of the lamps -- 5500 Kelvin. Higher Kelvin lamps have a higher proportion of blue light over red light. - Victor. |