Tetra Whisper IQ Power Filter 45 Gallons, 215 GPH, With Stay Clean Technology

I like the adjustable flow, seems to work well fir my 40 gal breeder. I've only had it a few months but haven't had any issues. Nice and quiet, cartridges are easy to rinse if you have pressured water and are cheap to replace if you get the unassembled ones. Overall happy with it.

This filtration system is so easy to assemble. It took less than 1 minute to get it setup and running. Of all the different hang back filters I've used, this one is my favorite and also quiet. I highly recommend this.

I couldn't be happier with this filter. I upsized my filter from the 30 gallon filter that came with my tank, to this 45 gallon filter because I have so many huge plants and so many fish my old filter couldn't keep up. It has roughly the same footprint so it fit in the tight space my old one did, but it's a lot more powerful. I love how this one is so quiet you can barely hear the motor at all. And it's self-priming. It works right when you plug it in.

We got this filter for our new tank and loved the other reviews of how it sounded. We thought it was peaceful and such a perfect fit! Unfortunately one morning we woke up to one of our catfish missing.. we found him in half stuck in the intake filter. We didn’t realize that we were missing the guard to prevent the fish from getting sucked up (this was our first fish purchase as adults). I immediately called the company to see what could be done and they apologized for the loss of our fish and are sending over the guard to us immediately. They also gave some advice on what to do for now while we wait for the guard to come in. You can tell by the pictures the big difference. At first we just thought we didn’t get the model that came with the filter, but after thoroughly reading the instructions/the box, we realized we were wrong and it was missing. So please just be careful and double check !! Wouldn’t want anybody else’s fish going the way our catfish did. RIP Captain Jack 🙏🏼

These work good in my fish tank pump easy to use and replace, keeps my tank nice and clean

This filter is working great and was so easy to set up. I would buy again!

Works great for 30 gallon tank always like to double up on size for aeration.

I wanted to try a different option after my Whisper 20i started making a rattling noise. It is about the same noise level as the internal filter (before it broke). I had to get the 45 version because the others were out of stock, and it just barely fits in my 30-long tank. I like the adjustable flow; it can be calm or turbulent depending on what your fish like. It is much less obtrusive inside the tank, but quite large outside. Bonus points for the easy-to-read instructions with replacement parts list. I think when this eventually breaks I will try a canister filter so my fish experience less noise in the water.