What are some ways to fix a leaking toilet tank?

To fix a leak caused by a crack in the tank, buy a porcelain repair kit, drain and dry the tank, use the repair kit to fix the crack, let it dry, then refill the tank. Tighten the bolts on the toilet tank to stop leaks caused by loose bolts.

Fix a leaking spud washer by draining and drying the tank, disconnecting the fill valve, unscrewing the tank bolts, removing the tank and placing it upside down, taking the broken spud washer to a parts shop and replacing it, then reassembling the tank. Tank condensation may resemble a leaking problem; the difference in temperature is the cause, and placing a fan to cool the air in the room can fix the problem.