Oops, I meant a NanoCube, not a BioCube. It's been great so far. I really just liked the shape of the tank, even though it's not really an all-in-one anymore. Although the way it's set up, the rear filtration chambers still work as designed. The drain is in the 3rd chamber, as is the return, but it's plumbed THROUGH the 3rd chamber straight into the display.
