Those Bio-Wheels look like a lot of maintenance. On page 26 of the manual, it suggests taking apart the whole filter monthly for cleaning, which seems like a lot of work:
Eclipse Bio Wheel manual (pdf)
The Whisper Micro filter seems like a lot less maintenance, although it does not do biological filtration; for this, you would need an ugf as well:
Review of Whisper Micro filter (pdf)
Eclipse Bio Wheel manual (pdf)
The Whisper Micro filter seems like a lot less maintenance, although it does not do biological filtration; for this, you would need an ugf as well:
Review of Whisper Micro filter (pdf)