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Are you sure?bulbs actually last 2-3 years as they claim. They are rated for m81 (150w hqi) ballasts, so should be plug and play.
different base, different ballast..
CMH vs. MH
First of all, Ceramic Metal Halide and Metal Halide bulbs are not the same thing.
Even if they share a lot of the same technology they have fundamental differences in the way they’re constructed and how they operate. You can’t just use your new CMH bulb in your old MH ballast. Trying to do so would be very dangerous.
For comparison purposes, the only disadvantage I can think of CMH over MH is the initial cost. With that said we’ve made it clear that CMH has a much better overall spectrum than MH, especially with that red boost at both 3100k and 4000k spectrums. CMH also run cooler, and produce a lot more PAR light when compared watt per watt.
The most noticeable point is degradation time. Standard MH bulbs have a lifetime of around 10,000 Hours. Which is less than 50% of the 24,000 Hours that CMH are rated for.
Usually CMH do not run on most electronic ballasts due to the extremely high frequency these ballasts output. Regardless, there are some high end electronic ballasts that can run CMH grow lights without any problems due to their microprocessors.



