I've got one and to be honest, I hate it. It came with my 75 gal. but I plan on replacing it soon. Doesn't filter good at all and is a very poor design.
Not trying to piss anyone off, just an opinion.
I clean mine every two weeks. I lightly rinse the baskets with Bio media in it and replace filter pads too. I by the white/blue polyester from my LFS 3' wide x 10' long cost about $25. A lot cheaper than buying the white filter pads from Cascade. On one cascade, a role that size should last about a year or more.