dsn112
Premium Member
Im not sure, I bought it at a LFS. That is what they were using instore and it was pretty quite.
It looks like mine works by keeping the water level in the overflow high enough to keep from the waterfall sound. then it enters via the bottom and under the thicker zone there are holes on both sides of the pvc. But since I purchased it, im not positive of the design.
It looks like mine works by keeping the water level in the overflow high enough to keep from the waterfall sound. then it enters via the bottom and under the thicker zone there are holes on both sides of the pvc. But since I purchased it, im not positive of the design.