View Full Version : PlusRite MH bulbs 20k?

04-04-2012, 07:18 PM
I recently bought 3 250 watt MH bulbs from brand plusrite. They are suppose to be 20k but seem allot more like 14k if not less. The store blames my ballasts. I run 3 250 watt Vertex ballasts for a coralife fixture. Never had a problem with other bulbs. Any advice?