Cascade 80 Hang On Filter Replacement Media, 3 Pack - Dual-Sided Aquarium Filter Cartridge with Activated Carbon & Poly-Fiber Floss for CPF1 - Fresh & Saltwater Use -Blue, 5.25x2.75x0.75 in

Came as expected fit 10 gallon tank filter perfect

It works perfect keeps the aquarium water clean

It was really dirty in the package and covered everything else in the box was covered in charcoal

Good product

I always struggle to find the right filter for our 2 fish tanks, ordering from amazon is quick and easy and beats driving all over town trying to find the right one, or the equivalent name store brand filter.

I have the Cascade filter that I use for my turtle tanks.No longer can buy them locally so I use Amazon to purchase.The items are just as advertised and come in a very timely manner.Will continue to use this sight for all my needs.

Its a perfect carbon filter for the Cascade 80 HOB Filter. Works as it should. Be sure to wash it before using!

these cartridges seem to have very little effective carbon in the (mandatory) premade filter pacs. tank turned acidic way too soon. tank is properly populated and maintained. had to add little cheap bubbler filter which has been maintaining ph well. too bad, too, since the filter itself does a nice job of keeping the water clear...just off the ph scale. the adjustable feature is nice, but I found I didn't need to turn it down. I wouldn't recommend the filter for this cartridge and vice versa.

Fits my filter perfectly. Does what it is supposed to do.