250 watt MH ballast(s)

[MikeP]

Originally Posted by Slick Fork

I'd be curious to see if the decrease in power consumption is comparable to the decrease in par. For example if the power consumption drops by 15% does the par drop 15% or is it more or less dramatic? Just how much more efficient would an E-ballast be over a traditional magnetic?

Also, what about electronic interference with other stuff such as televisions, radios, aquarium controllers,etc.?

I was wondering about the about your first question(s) as well. Hadn't thought about interference.

[MikeP]

Albert, parkinsn...thanks for the links.

[xtreme]

Only problem I could see with a dual ballast is if one fails then you might end up with a huge ballast running only one lamp due to the fact that you can't just replace the one that failed. With two single ballasts, if you run into problems you only have to fix/replace the one.