Question about nano cube...

[mr.clownfish]

sometimes my nano cube's light just turns off by its self. can some one tell me y? and to get it back started i tap the top of the tank a couple of times. the filter still works only the lights.

 

[peef]

I would say that you have a loose connection somewhere. If the tank is pretty much brand new I would call the place you bought it from and ask for a replacement. If it is loose internally it could end up shorting out or something.