Is our Eco-column self-sustaining or not?

Here are some of the reasons why our eco-column is not self sustaining

• organisms in the aqua zone would not be able to survive because the water is not oxygenated.
• we have to keep on adding to the decomposition zone as it will eventual run out
• the environment is not large enough and does not have the right factors to sustain multiple life forms
• because it is unable to sustain multiple life forms we cannot have a sufficient food chain in the eco column

Here are some reasons why we fee our eco-column could be self-sustaining

• we use the water which overflows out of our aqua zone to water the terra zone, thus putting nutrients back into the eco-column and keeping the cycle of energy going.
• water which evaporates out of the soil in our eco-column condenses on the top of the bottles and falls back into it.