The principle
Cycle before you stock. Food-grade IBC only, a backup air pump as life-support, a water test kit that is non-negotiable, and no fish in the system until it is biologically cycled and legal with DGAV/ICNF.
Materials
- 5–8 car/tractor tyres
- landscape fabric
- cardboard base
- soil/compost
- seed potatoes
- eco-friendly paint (optional)
Tools
- Utility knife
- shovel
- level
Reclaimed from
Garage/farm waste tyres (verify clean) + cardboard from packaging + site soil