noise

I don't want it on 24/7 as it creates quite a lot of noise. I wrapped a towel around it to make it quieter, but the noise is noticeable. Every few minutes it turns itself off for a few seconds before coming back on.

If my school band were to get a fish, would the fish be harmed in anyway by the noise?

Hello all,   I am back to the hobby after many years (decades really). About a month ago we bought a small 45L/10G aquarium. It came with a internal filter, which is a bit noise for us humans out of the water, but much much worse for the poor fish, with that underwater power pump right there...