Reeflux 12k change out

[newsalt]

I'm using Reeflux 12k 250W MH bulbs. They run for 7 hours every day. How often should I change them out for new ones?

[kdblove_99]

I thought the norm was around 9-12 months. I think once a year is pretty good and it was i do

[newsalt]

I thought 9-12 months as well. Thanks for confirming that.

[ReefWreak]

If you don't mind the color change, then there is no reason to change them out any more than once every 3 years in most cases. Check out Reefkeeper magazine, April 2007.