Down to two lights, looking for assurance...

[fkshiu]

Originally Posted by midgetwaiter

Small note, URI T5 bulbs are properly designated as V-HO. They worked with Icecap to build bulbs that would last longer with their ballasts, provided adequate cooling they last a year.

That is correct! The key is the active cooling , i.e. having fans blowing on the endcaps and bulbs. Having T5HOs in close proximity to high wattage MH bulbs without active cooling can really affect their output/lifespan.