Penn-Plax Cascade 100 Power Filter – Hang-On Filter with Quad Filtration – Great for Freshwater and Saltwater Setups

Am using this unit for extra cleaning of my 3 Betta tanks. Each tank has it's own filter that cannot seem to keep up with the task. To solve the problem, I use this great filter occassionally on each tank. Very quiet, excellent cleaning job. Adjustable flow and best of all it doesn't seem to bother my Bettas. Use 1 day every two weeks on each tank.

I'm having issues with the Adjustable Flow Control... as in it doesn't... This was one of the main reasons for this purchase, so I'm quite disappointed.**UPDATE**The flow adjustment does work, you just have to wait awhile to see if it'll change, but I've been able to get it to work for my fishes needs :)

Awesome! My filter really is quite, yes it is! I bought this thinking that it was just going to be a cheap quality back up filter that would be noisy and break in a week, but no... It is working as good as my $100.00 hang on back and it really is dead quite. For the money, OMG this filter is awesome!

Not enought flow for a 10 gallon, 5 gallon is the maximum in my opinion. Put 2 in a 10 gallon and water doesn't seem to move enought. You need to do you own filtration media also, what come with it is real garbage. Better to buy a submersible pump and do your own filter.

I was worried about changing my filter for my 20 gallon as I have been using others for the last few years. This one works smoothly and silently. It doesn't disturb my freshwater community tank either. All fish have been able to swim just fine. My only concern will be with a longer finned fish like a betta once I add it in the future. But the reduction valve for flow is working just fine too.