I wish nothing was wrong. Just found 3 dead shrimp. Water test indicates there is still 0.25 ammonia, 0 nitrite, and < 5 nitrate. Something has to be wrong because the snail is staying above the edge, which is unusual for him (actually her, she started egging the tank).
It’s not an oxygen issue, there should be no ammonia in the tank so you will need to do a water change and figure out what has changed in your tank.
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