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CO2 & science
A few recent postings about apparent CO2 *poisoning* brings to my mind the
recent exchanges and very scientific explanations regarding CO2/oxygen
content in water and whether or not it affects fish.
You can come up with numbers and scientific explanations to explain why CO2
levels will not harm fish.
In practice however, it does happen. It's not helpful for people reading the
list to see an impressive very technical explanation (must be true!) of why
it is not harmful. It can be harmful. Depends on temperature, fish, and lots
of other variables, but the bottom line is CO2 can kill fish.