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
- Reclaimed barrel/IBC (100-200L)
- stone plinth (granite
- gravel
- mortar if needed)
- food-grade hose
- brass/stainless valves
Tools
- Spade
- level
- cold chisel
- mallet
- drill
- spanner
Reclaimed from
IBCs/barrels (reclaimed) + site stone + Leroy Merlin