Each preassembled Penguin Filter Cartridge filters aquarium water through a double thick polyfiber pad which traps more dirt and debris, faster. The filter cartridge is packed with super-efficient pure Magnum Activated Carbon, it keeps working long after most carbons stop. It's better than a bag: just shake and rinse. The patented ribbed backing evenly distributes carbon for maximum water to carbon contact. No bypass, no tea bag effect, just crystal clear, crystal clean aquarium water. Each Penguin Filter replacement cartridge includes a foam pad and carbon for superior mechanical and chemical filtration. The easiest way to superior aquarium filtration.
Replacement cartridges fall apart after few weeks use i the filter…which aside from this shortcoming is a a very good filter for the money.
Cartridge Replacement 12/5/2013
Work well they are OEM
Typical replacement cartridges.... cheap and fall apart in a couple weeks.
Cartridge Replacements 9/10/2013
Easy to use, easy to order, quick to deliver. Will continue to re-order from your website.
cartridge for penguin 9/10/2013
I am new to this filter system about a year now and they work very well can even be rinsed out and used a few times which is great
Cartridges for Whisper 200 6/14/2013
I've noticed that lately, these cartridges seem to have less charcoal in them. the last ones I received had the top & bottom charcoal pockets empty. When I first started getting them, all of the pockets were filled.
These are excellent! 3/15/2013
I love these! So easy to use! And what a great price this site offers!