So the next thing we had to figure out was how we could remove the oxygen, which we did by building this column which circulated some of the water, and put back CO2, which we did by bubbling the system before we recirculated the water.
Så det næste vi skulle finde ud af var hvordan vi skulle fjerne ilten. Hvilket vi gør ved at bygge denne sølje som cirkulerer noget af vandet, og putter CO2 tilbage i systemet, dette gjorde vi ved at lade bobler stige igennem systemet før vi lod vandet løbe tilbage.