Both are Hortilux Super HPS
13 month old bulb = 812
New bulb = 1274
(The scale is Lux 10X.)
Tested with a Digital Light Meter (model 16LIT001-LX1330B).
Same ballast, same spot for measurements (about 4ft from bulb), both were turned on for 20 minutes before measurements.
Im shocked they were that much different, i couldn't visually see a difference.
Ive got two 1000w i can try too, gimme a few days.
13 month old bulb = 812
New bulb = 1274
(The scale is Lux 10X.)
Tested with a Digital Light Meter (model 16LIT001-LX1330B).
Same ballast, same spot for measurements (about 4ft from bulb), both were turned on for 20 minutes before measurements.
Im shocked they were that much different, i couldn't visually see a difference.
Ive got two 1000w i can try too, gimme a few days.