My stupid platy with his little fishy brain (really, I love my platies like other people love their dogs) went into my new CO2 bell from underneath and obviously couldn't remember how he got in. When I found him he was just floating there, not even moving. I lifted the bell a bit, he still wouldn't move. Finally he realized what was going on and slowly swam out. Have you even seen a fish woozy from CO2? Really, it's funny. He was swimming all wobbly and slow. He's recovered now, these guys have to be the most resilient fish in the world (by now it's common knowledge in this forum how often I have to move my fish).
The moral of the story: You'll know if your CO2 conc is too high if you have a bunch of fish looking like they smoked up!
The moral of the story: You'll know if your CO2 conc is too high if you have a bunch of fish looking like they smoked up!