Hello,
I am wondering if anyone has had this problem, or has a solution to it. I just got my filter running today, and the water pump (sequence) is fantastically quiet. The air pump for my moving bed is the PondMaster [Danner] AP-60, which is quiet enough since it is tucked away in a shed. I ran a 1/2" line from it to my bio barrel and into a 10" rubber diffuser. The amount of air is great, but the barrel itself is quite loud. When you place your hand on it you can feel it vibrating. The deep drone/hum of the barrel is very irritating, and isn't covered up by the waterfall noise. Any ideas on how to quiet down a humming barrel? I feel like wrapping it in that sound deadening stuff for cars would be the kind of thing I'm looking for, but the barrel is right next to the pond and meant to look nice.
Some stuff that may be helpful:
- 1/2" line is braided vinyl tubing
- enters barrel through 1/2" bulkhead near top (above water line). I added a couple gaskets on the outside in hopes that that was where the noise was originating, but that did not help at all.
- inside is a 1/2" PVC going down at an angle, not touching the walls of the barrel, to the 10" diffuser which is "hovering" above the bottom of the barrel.
It seems as though the vibration is being transferred through the water itself.
Thanks for any help or suggestions you can give!
- Eric