I couldn't really tell for sure from your pic's, but are you handling your bulbs with your bare fingers(thought I saw fingerprints), if you are do, it is possible the oil will cause a hotspot and they will blow
latewood Reviewed by latewood on . Should MH bulb show light after power up? or does it need time to start light up for first time? it reads "time should be allowed for lamps to stabilize in color when turned on forthe first time. this may require several hours of operations, with more than one start. lamps may require 10 to 20 minutes to re-light if this is a power interuption. " Rating: 5