It's been about two weeks, and I haven't had any more losses. My heat is still up, the water level is still dropped, and there's still the air stone in place. Questions, though:
1. The blenny seems to really like the warm water. It's probably around 86 right now. I have a kuhli loach and a gourami in there, too- will the warm water affect them long-term?
2. If I raise the water level back up, but keep the air stone in the water, will that be enough aeration to off-set the heat?
3. Do Malaysian trumpet snails die in heat like that? I've found a ton of empty shells, and I pulled all my assassin snails out a couple of weeks ago.