Let there be light...

[DavidK]

Another quick and simple question from a newbie. I know the type of fish effect this but in general how many hours a day should I set the light to be on in my acquarium? 20 gallon tank with a single bulb.

 

[Jchillin]

12 hours on and 12 hours off is fine. In the beginning, you can shorten this to 10 hours (to deter algae growth...it will grow but not overtake the tank).

 

[Fishyfanatic]

Agreed. Some say that lights only need to be on when viewing, but I am not a fan of that advice. Fish need light to promote their coloration and overall health.