I have had my tank up for a little more than 9 months now, and bought some new light bulbs to change. When I did, the guy mentioned that "you get a lot of algae growth on the glass as they get older". That made no sense to me, EXCEPT I have actually noticed more algae on the tank glass for the past month or so. No algae growth on the substrate or rocks, just on the glass.
So, is this really true? Or just a funky, funky coincidence?