Read a similar thread in RC, and thought it is pretty interesting for Fowlr keepers to share.
My 1 year old 322 Fowlr has no water change for last 3 months (since Aug 2013).
Everything is ok, fishes are healthy and zero casualty.
Only did water top up every week.
Weekly maintenance:
- skimmer cup cleansing
- water top up
Every 2 weeks maintenance:
- change filter wool
Monthly maintenance:
- Top up bio-pellets
- Clean wave makers
- Replace bacteria balls every 3 months