I always rinse mine out and reuse. I don't replace them unless they are
falling apart, or I have had some sort of disease in the tank. They work
just fine.

Sarah

"Celtic Wanderer" wrote in message
...
Hi all,

I am using an Emperor filter with Emperor Ready-To-Use filter cartridges.
According to the directions you should change them every two to four
weeks.
Does anyone just rinse them out and us them for a longer period of time?

--
Celtic Wanderer
http://home.comcast.net/~Celtic_wanderer