Why vaccinate adults against hepatitis B? Hepatitis B can lead to cirrhosis, liver cancer and death. Hepatitis B is incurable. Up to 1.4 million Americans have chronic HBV infection. Hepatitis B is 50 to 100 times more infectious than HIV.
Re: Pool about to overflow from heavy rain dunno of this works, but try this: put one end of a hose in the pool, the other in a lower part of the garden. Now you need to suck on the hose (the side outside the pool) untill water starts running, normaly, the water will drain.
Fill a bucket with water and mark the level of water in the bucket and the water level in the pool. Place the bucket beside the pool and compare the two water levels 24 hours later. If the water level in the pool has dropped more than the level in the bucket, you probably have a leak.