I'm not sure if you're refering to the kind of filter media they sell at krewkut.com or some other brand. I can tell you that I got some from krewkut 3 years ago - really cheap - and haven't had to replace it yet. Looks like it'll last for many years to come.

Here is a link that might be useful: Krewkut.com

nmpondguy,

Thank you for your reply. I haven't heard of krewkut before. The media I'm talking about is quite a bit more expensive than what krewkut has. Poly-flo is the brand name of what I was looking at, but I'm going to check krewkut's media.

We have some of that stuff, but it condenses too fast to be of use. Maybe we have too much algae, but we can't get each section to last more than a few weeks.