They used to use cannaries to detect air quality issues in mines, because birds are more sensitive to air quality than humans. Obviously you should take note if there is any change in behavior, or signs of stress in the bird.
That said, I don't see how this could be a problem. No more CO2
is being created by a DIY
bottle than when making a couple loaves of bread, and spread out over more time too. If you're overgenerating CO2
, you should see a massive dip in your aquarium pH and stress in the fish before stress in the bird.
Every time you, your bird, or your fish breathe, you exhale CO2
, this is a natural part of your enviroment, the DIY
setup just increases the local concentration in your aquarium.