I was wondering if anyone else has had loudness issues with HOB
filters. In my 30 gallon FW
I've been using a Penguin Bio Wheel 200 for about 3 months and the noise of the motor has become ungodly loud. I happened to have a spare Whisper 40 HOB
filter that I've switched to, but it is too makes horrific grinding and screeching noises. I have a feeling that sand is getting between the walls of the magnetics and causing friction- the magnet on the impeller shaft of my Penguin has scaring, but I'm surprised these aren't designed to avoid such things.