all of the leds in my 150w mh odyssea pendants burned out one by one, the reason i think they went so quickly (like 2 months) is because i just had them pluged in the wall instead of on a timer so they had to endure the heat of my 14k bulbs.

anyways i put off buying replacement bulbs because i thought their wasnt such a thing but i was wrong i found them here http://www.aquatraders.com/category-s/26.htm?searching=Y&sort=7&cat=26&show=9&page=3

these replacement leds are plug and play all you do is take the glass off of your pendants and they have a little tab on each side you just squeze the tabs in and pull them out and their is a plug on the back of them and you just un plug it and plug your new ones back in. be super carefull not to break the glass cover to your pendants because its hard to get a replacement