T5 bulb replacement

[om6acw]

I was changing my actinics and fiji purples every 6 months and full spectrum one somewhere between 9-12 months. I know some people from Europe who change their T5 every 3 months and they have relay nice SPS tanks....

[bignose]

I've noticed some algae dusting on my glass but thats all so far. On the other hand the algae in my overflow box is slowly going away. Not sure what that means.