I have a 10 gallon divided tank that I keep two bettas in and I've been having noisy filter problems for months. I've tried Aqua Clear and had it vibrate way too much, tried Aqueon and had that one be VERY loud, and am now trying a Whisper PF10. All three have been too loud for my bedroom. I'm wondering what everyone else is using and what you all would reccomend as the most quiet filter. I was thinking about trying 2 of those Nano filters. Any help with this headache would be very much appreciated.