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Originally Posted by DrHank  After only 6 months one of my 250w 14K Hamiltons running on a magnetic ballast burned out. A bit disappointing to say the least. Anyway, I'm thinking of replacing 2 of my 4 MH now and the other 2 next July (after a year). I know that the XM 10K is a bright white bulb with a lot of Par. I was wondering about their 15K bulbs. Anyone using them? What do you have to say about them? |
I like the 15k XM mogul base but my experiance with the HQI bulbs is that they have to have a long burn in time. The XM 15k HQI looks closer to a yellow 10k for some time. The 15K mogul base are nice. Right between a 10k and 20k. They provide growth spectrum and at the same time give good flourescence. I like XM. For the rpice they are good bulb.