Quote:
Originally Posted by parkinsn
Most MH lamps will depriciate 50-60% of lumens by 50% of lamp life (dependant on brand, and yes you will find that the MFR will try to hide that and post better findings).
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Would you be so kind to post a reference link to your statement ?
I remember not too long ago there was a discussion on here and some good references just to the contrary. That MH bulbs only loose 20-25% in 12 months.