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Cole_Robbie · May 20, 2016

Wattage is normally determined by ballast. There are some new grow light ballasts that allow you to run both HPS and Halide, or even use different wattage bulbs, but those are specialty products.

May 20, 2016	#36
Cole_Robbie Tomatovillian™ Join Date: Jun 2012 Location: Illinois, zone 6 Posts: 8,407	Wattage is normally determined by ballast. There are some new grow light ballasts that allow you to run both HPS and Halide, or even use different wattage bulbs, but those are specialty products.