The principle
Multi-barrier, not single-point. Sediment, then biology, then storage on a level plinth so water always flows where you want it. Food-grade containers only — never a tank that once held chemicals.
Materials
- Clear PVC pipe (50-75mm)
- connectors/valves
- float valve
- PVC glue
- stainless bands
Tools
- Utility knife
- spanner
- level
- clamp tool
Reclaimed from
Leroy Merlin + local ferrages + plumbing salvage