A
I've DYI'd the system to be pretty quite. I was taken back by 2 local members that visited this last year tell me it was super quite compared to thier systems. Really all you can hear is the slight hum of the pump. The stand is open (no doors), so I suppose with doors it would be even more quiet. Sometimes the AC70 running the 29 gallon next to the main 140 pump makes more noise, lol. I installed a spray bar so I can hear a bit of water splashing now. It's not bad though.MattArmstrong said:fishNAbowl, I'm jealous of your tank! I only have space for a 3 foot tank. How is the noise with the overflow? I've been toying with using a sump, more because I'm a gear junkie than for any strong need. I'm worried about noise.