Posted by a reviewer on Amazon

This is simply the sleeve that acts as a particle filter

Posted by a reviewer on Amazon

They stretch out of form and do not fit right after that

Posted by a reviewer on Amazon

I originally though this was a fiscally smart solution

Posted by a reviewer on Amazon

However these fit the units perfectly covering all of the areas exactly how they are supposed to be and they are fairly easy to remove and replace without too much hassle whereas the manual cut and fit ones were a hassle both in cleanup and to get them to fit on the filter appropriately

Posted by a reviewer on Amazon

These are nice as they totally wrap the inner carbonmaterial cartridge wrapping other filter materials is a tight fit and doesnt catch as well

Posted by a reviewer on Amazon

They definitely filter out a bunch of junk thats floating around in the tank

Posted by a reviewer on Amazon

I rinse out each canister once a month but i will only service one at a time and then the other two weeks after that

Posted by a reviewer on Amazon

Took me a few times to figure out how to open and close my filter to put in the charcoal but thats not the fault of this sleeve