[cypher]

Sounds like you're doing all you can, if you can open the windows early that should help keep the temp down while you're out during the day, I have put ice blocks on a shelf under my cages (on a shelf, not touching the cage) when it's really hot but try not to put it right under his nesting area so he can choose if he wants to go into the cooler spot, does he have sand in his cage? Sand can help them to keep cooler if they lie in it or just go in the sand bath for a short while now & then.