I am just starting to setup a 2nd tank (nano cube hqi).
The question I have, is in comes with 4 LED (blue lights). When should those lights be on? I am not sure if I should use a timer or if they just stay on all the time. ...
leds last very long longer than you would probably have your tank.......any beside there cheap to replace anyways.....couple bucks down at your local radio shack