Im trying to figure out the quietest way to transfer water from a tank to a sump. i have a diy durso in my display that makes a lot of noise. fortunately it is in the living room, so its not that big of a deal. i would like to put a sump on my daughters 20 gal zoo tank, but it is in her bedroom, so i would like it to be as quiet as possible. the sump will be around 20 gallons, minus equipment and room for overflow. also, i can drill the tank if needed, so please give me your suggestions. thanks.