Penn-Plax Cascade 300 Power Filter – Hang-On Filter with Quad Filtration – Great for Freshwater and Saltwater Setups

I decided to switch to this filter for my 62-gallon fancy goldfish tank after running a Marineland Penguin for quite some time... it was the best decision I could’ve made. The biggest pro to using this filter is the silence. It’s the quietest hang-on-back filter that I’ve ever come across. 4 months in and there’s little to no mechanical noise coming from the motor, my mother often puts her ear up to the filter because she can’t believe it’s even on. There’s also very little noise created by the water return (which I absolutely love). If you’re someone who likes to hear the sound of running water this filter will not be it for you, you can hardly hear a trickle. The filter is also incredibly efficient with a fantastic (and completely adjustable) flow rate. They really don’t lie on the box when they say this thing turns over 300 gallons of water per hour. Be prepared to have your water looking clear as day, especially when used with the right filter media. My only concern with this filter is that the materials do feel a little bit fragile, so I’m curious to see how it holds up long term. All in all though, it’s fantastic value for the cost; it’s just as good as any other mainstream brand filter out there.

Works well and does the job. Fairly quiet you might hear a slight hum and the trickling of water. Can't be beat if you're in the market for one and can't be beat at this price.

I have 2 of these on my fancy goldfish tank. They work great. My only issues with this filter is the small gap between the bottom of the cartridge chamber and the cartridge insert. I feel that the bottom should be completely flat so the cartridges sit flush on the bottom. Otherwise I love these filters. Very quite and easy to use and clean.

I love this unit! I was able to do a minimal customization to allow this unit to hang on the side of my 55 gallon tank! It’s small yet large enough to keep the tank clean. Perfect for filter modifications! It’s 3-4 times larger than the quiet flow 10! It’s much, MUCH quieter than the whisper EX! Enough room to add any media you’d desire to the holding/processing tank. Has a flow adjustment which would be great for more delicate fish. With a hand grinder I was able to remove 2 tabs, one from each side of the unit where the opening for the water to flow is, it wasn’t quite small enough to fit the 55 gallon side, so I took a hand grinder and cut off each tab shown in my photos, it fits perfectly into the space now and works great for the area I needed it to fit into! Happiness! PLEASE NOTE: If you appreciated this review please give it a “thumbs up/like if it was helpful” I truly appreciate you helping me to continue to give honest/unbiased insight into products I’ve used and you may have questions about. Interested in a product but don't know enough about it and would like it reviewed? Please let me know and I'll see what I can do... follow me for a vast array of purchased product reviews. Thank you 🙏

It's actually noisy, but if you remove the other detachable comb/strainer, lol, i dont know how you call that mb, the splash of the water quiets down. Still does its job, but if you're sensitive to noise, better look for others filters.