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green acres · 06-24-2008, 05:09 PM

i use a son argo 430watt bulb it has extra 30% of the blue/green spectrum. i have been completely happy with it. son argo i believe is the only brand that has the 430 watt. i am not sure if they will work on a mh ballast though. i have a 400 watt hps ballast.

06-24-2008, 05:09 PM	#4
green acres Free Thinker Join Date: Apr 2008 Location: vancouver Posts: 413	Re: 400w MH Bulbs?? i use a son argo 430watt bulb it has extra 30% of the blue/green spectrum. i have been completely happy with it. son argo i believe is the only brand that has the 430 watt. i am not sure if they will work on a mh ballast though. i have a 400 watt hps ballast.