Do actinic lights help grow algea??

[SCUBAFREAK]

Just curious if blue lights make algea grow as well as regular daylight lights. From what i have heard it is the red spectrum that grows algae so i would say no it doesnt. something i am just curious about. Also are bulbs rated by color spectrum? By that i mean are 10000k bulbs redder than 14000k and so on.

Thanks
Ryan

[BLockamon]

The lower the color temperature, the more algae growth there should be, because of both the red spectrum and because lower K bulbs tend to give off more light.

Yes, 10000K bulbs are redder than 14000K (or 14000K are bluer than 10000K...same thing).

[MaximumPuffer]

maybe I'm crazy but i had a huge problem in my tank with algae growth when i was using actinics.

[SCUBAFREAK]

thanks
that helps.