I set up a 29 gallon tank 3 weeks ago with a Tetra Whisper 40 HOB
filter. At first it was reasonably quiet. A couple of times it clogged up and got noisy but I just cleaned the filter and motor unit like the instructions said and it quieted down. Last night it started making a racket again. I cleaned out the motor thing, rinsed out the filter in tank water but it is still noisy. I am going to call the Tetra company Monday and see what they say but right now it is driving me crazy. The company I ordered from has a 60 day return policy so I am going to call them and see about returning it and getting a different filter. It being the weekend, I have to put up with the noise. I am three weeks into cycling and I hate to start over. I am going to see if I can order another filter and get it set up with my current filter media before sending the Whisper one back. Hopefully I can.
Here are the two filters I am looking at
Aquarium Filtration and Water Quality: Aqueon QuietFlow Power Filters
Aquarium Filtration Power Filters: Fluval C-Series Multi-Stage Power Filter
If I get the aqueon I would order the 50. If I order the Fluval I would order the C3 if I get a refund on the Whisper or C2 if I don't. Trying to stay under $30 for now.
Anybody have any input on the noise level of these two filters?