NO/VHO Lighting Question

[Richy44]

Ok, This has bugged me for some time. Now it is time to find out what the answer is.

Question: What determines the light output of the flourescent, the bulb or the basllast?

Example: 48" bulbs

40W NO and 110W VHO.

If I put the NO 40W on an Icecap 430 Ballast does it now put out 110W of light or just 40?

Will a 110W VHO bulb run at only 40W on an Icecap ballast?

My main Question: Is it possible for the 110W VHO bulb to be running at just 40W on an Ice cap Ballast. The reason I ask is, last week my lights are still lit but are WAY less intense.

Bulb Change was Sept 1st and everything was good.

Before I call Icecap and UV I would like some background info.. I always wondered but never new!

Thanks for your help and hope you make sense of my question.

Richy..........