You will only want to mix a 1lb bag of pool shock with the 5-gallon bucket 3/4 full of water. If you need to add more then 1LB of pool shock then you will have to mix a bucket for each bag of pool shock. Use something other then your hands to mix the pool shock. Most people use a stick, a small metal pole etc.
Major League Baseball got the results it wanted in ensuing years. The average time of a Major League Baseball game was 2 hours and 54 minutes 2001; 2 hours and 52 minutes in in 2002 and 2 hours and 46 minutes in 2003. The figures remained similar through the 2006 season.
A baseball game lasts 9 innings. (Each side is allowed 3 outs per 1/2 inning. Typically this results in a game between 2 hours (abnormally short) and 4.5 hours (abnormally long) in duration. The schedule you saw reflects consecutive games.