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
- IBC 1000L
- second container
- pump 2500l/h
- air pump 6l/min
- clay/gravel media
- PVC fittings
- bell siphon
- test kit
- net pots
- goldfish/carp
Tools
- IBC saw
- pipe cutter
- wrench
- hacksaw
- drill
- test kit
Reclaimed from
Food-grade IBC (verify history) + cut-down IBC + copper/aluminium fittings + pipe offcuts