Marineland 24-Pack Penguin Rite Cartridge, Size C

Awesome product

These are pretty good. I use two in one filter. Or four in a double sided filter. Two on each side. To help clear your water even more.

This multi-pack of cartridges was an amazing value in comparison with our local pet supply store for the same product we have trusted for over a year now. They are easy to install into the filter and it is easy to tell when they need to be changed as well.

Easy to install and replace. Keeps the fish healthy!

The cartridges arrived safe and sound. Everything I expected at a not-to-be-beaten price!

Product as described!

These filters work well to catch all of the extra particles and food pellets in the water. I like the 24 pack because it saves money over purchasing these filters at Petsmart.

Very good shipping time and product quality!!!

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excellent price