Swirl Filter

Swirl as in cyclone. Design rationale:

1. Pump water in parallel to bucket side so water swirls in bucket, allowing fish waste to settle
2. Overflow back to system is in the middle of the bucket. The middle top has least waste.
3. Drain valve on bottom to drain waste periodically.
4. Water must flow slowly for best results so solids have time to settle.

Sourcing

Small lift pump - $5 - [1]