Unusual.
It's commonly referred to as an "upper-decker."
They are called tank bolts.
this is when you go number 2 in the tank of a toilet instead of in the bowel.
It will go to the sewer or a septic tank. Back then drains used to lead to the ocean. That's what happens.
The water in the lower toilet is probably being siphoned out of the tank by the negative pressure caused by flushing the upper toilet. This CAN happen if the water level in the tank of the lower toilet is over the top of the ballcock. If this is the case, the tank water is being siphoned into your drinking water! Replace the ballcock with a Fluidmaster right away. If you have a small white fill valve that sits in the bottom of the tank, get rid of it. These are illegal and WILL siphon under these conditions. If the lower toilet runs AFTER the fill cycle of the upper toilet, it may be that the ballcock seals at a lower pressure, and the pressure spike when the upper toilet shuts off causes it to run a bit until the added water closes the valve a little tighter.
Its called condensation, moisture in the air condenses on the cold surface of the tank.
The width of a toilet tank can vary in size. The average width of a toilet tank is about 18 inches.
Toilet tank
Will a American standard toilet tank fit a glacier bay toilet
The tank above your toilet.
seal to stop water from runing into tank located between tank and bowk
How do I find out an answer to a question about toilet repair? I have a crack in my tank and I want to fix it. It is ceramic.
not all toilet bowls and tanks are compatible. If your toilet bowl has no holes for a tank it most likely a bowl that is made for a flush valve, or a high or low boy mounted tank.