Metal Halide - Choices

Aquattro · #1 11-16-2010, 07:42 PM

I agree that keeping the 250s would be better than switching to 2 x 400. The difference is probably not enough to warrant upgrading to 400 3 times.
FWIW, I was going to use 250s, but a screw up on my bulb order a couple of years ago put me into 400s (again). Now with a deeper tank, I'm sure they'll work better, especially running radiums.

sphelps · #2 11-16-2010, 08:06 PM

Fun fact, 3 400W halides running 12hours a day will cost close to $40 per month in electricity!

daniella3d · #3 11-17-2010, 09:16 PM

Gee wizz..how much do you pay per kilowatt per hour? Here it's 7 cents. Surely not 40$ per month and why do you have to run it 12 hours?

That'S way too much I think.

Quote:

Originally Posted by sphelps

Fun fact, 3 400W halides running 12hours a day will cost close to $40 per month in electricity!

sphelps · #4 11-17-2010, 09:21 PM

Quote:

Originally Posted by daniella3d

Gee wizz..how much do you pay per kilowatt per hour? Here it's 7 cents. Surely not 40$ per month and why do you have to run it 12 hours??!!!

That'S way too much I think.

Based on $0.08/kWh and that most 400W ballasts out there run closer to 500W a piece. So 1500W x 12hours = 18kWh x 30.4 (average days per month) = 547.2kWh x $0.08 = $43.78