| I wish it were that simple. My lights were new in late Sept. , they are T-5's and everything I have seen on these lights say they should last 12-18 months. I am really starting to worry about something being terribly off in the tank, but I don't know what else to test. Water changes are not doing anything. This has been a continual downward spiral for months now, and it looks like it is finally takiing a toll on the fish. | 
