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
- Site excavation
- geotextile lining
- coarse gravel infill
- native plants (willows
- sedges
- rushes)
- marker stakes
Tools
- Spade/mattock
- shovel
- wheelbarrow
- level
- plant spade
- stakes
Reclaimed from
Site materials + Floresta Comum (plants) + local nursery + Leroy Merlin