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.
Următorul pas a fost să vedem cum scoatem oxigenul. El iese prin această coloană care a circulat o parte din apă, şi a readus CO2, prin barbotarea sistemului înainte de recircularea apei.