Hello all, I've got a quick question, I am sure it will be resolved by the first comment, but I'm just looking for a quick answer. I brought home a pipette from my mothers lab last week and made a cartesian diver to show my wife, it worked perfectly for about 3 days, then yesterday afternoon (about 1) I left my home, and turned the air up to about 85°, my wife and I returned home about 10 p.m. and I noticed that the diver was at the bottom of the bottle. My only guess is that the heat of the home caused the water to expand, but because it is trapped within the bottle, it had the same effect on the diver as the pressure applied from the outside. additionally, when I opened the bottle, some of the water squirted out, and the diver returned to the surface. Thanks for any info!