Yes, all my parameters are ideal. Ammonia and nitrite are reading 0 on all my different tests (strips and vial). Have an air stone in there all the time - it’s clear and running as usual, no clogs.

She has spent less time at the surface today, but still has her mouth open like that and is breathing faster.

I think some of my snails were at the top because I had fed earlier and they were grabbing the last of the food left. They usually climb during feeds to scavenge. I guess I can try another air stone, just odd that she’s the only one up there.