History. Narrative Essay Examples In a narrative essay you tell a story, but you also make a point. So, it is like a story told for a reason. Narrative Essays: To Tell a Story There are four types of essays : â¢Exposition-gives information about various topics to the reader. â¢Description...
As a minimum, the average pool will want to keep the following chemicals on hand â even if you use a salt chlorinator, you will need these other pool chemicals from time to time: 1  Chlorine tablets and pool shock. 2  Pool pH Up and/or pH Down. 3  Test strips or test kit.
Salt water pools use a chlorine generator to convert salt to chlorine through electrolysis. A generator requiring the addition of salt is most convenient for the pool system. Salt water pools convert salt and water, using an electric current, into chlorine and hydrogen gas and sodium hydroxide.