I burped him when he was upside down becaus I thought he had a air bubble don’t know if it helped and then I turned the heater off and forgot to turn it on till now don’t know if that helped but the water went down to 72 it was at 79 so maby that helped I’m not sure through to be honest
Glad he’s all better! It’s quite likely that the puffer was in shock from the transport or sedatives put in the shipping bag. Glad you’re treating copper, hopefully there won’t be any more problems!