"Altum" == Altum writes:

Altum I wouldn't worry too much as long as your fish are showing no
Altum signs of distress. I have similar summer temperatures and my
Altum fish do fine as long as there is plenty of oxygen. I start
Altum airstones in all my tanks when temps get above 80F. If you
Altum don't like airstones, you can lower the water level a bit to
Altum get surface splash from your fiter.

My fish are acting a little hyper but other than that seem fine. One
of my gourami's seems to be spending a lot of time at the surface, but
I think that might not so abnormal for a labyrinth fish.

I'm a bit paranoid about airation, so I keep a bubble wall going all
the time. As for lowering the water level, the water does that fairly
well on its own. I think I've lost about 1 gallon since Saturday.