Water changes

[Aquattro]

Originally Posted by ReefOcean

If there is biological reactions inside that box that are transforming carbon dioxide back to oxygen with high efficiency you could be stuck in there for an extended period of time.

If the smell didn't kill you, sure

And if urine and feces were invisibly merged with this oxygen, then that's good too, right? Water changes are the easiest and simplest form of keeping water quality up. Why would you be that lazy?