Diatomaceous Earth versus Sand filter

[waterbear]

On a side note, one can also add a scoop of DE to a sand filter to help out the sand a little. FYI: I'm pretty sure you can't do this to a cartridge filter..it would probaly rip it up or clog it up one.

Not necessary with a cartridge. Sand only filters to 60 microns, a CArtridge will filter to 20...almost as good as a DE filtering to 6. And a cartridge filters better when it is dirty! (but don't let it get TOO dirty or it is a pain to clean)