Nov 26, 2014 #1 M Mik Reefing newb How often should I change my UV bulbs? Specs says the bulb is good for 12,000 hours (500 days) but I have heard that it is not effective that long. Thanks.
How often should I change my UV bulbs? Specs says the bulb is good for 12,000 hours (500 days) but I have heard that it is not effective that long. Thanks.
