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.
Chloramines are responsible for the chlorine smell of pools, as well as skin and eye irritation. These problems are the result of insufficient levels of free available chlorine, and indicate a pool that must be shocked by the addition of 5-10 times the normal amount of chlorine. In saltwater pools, the generator uses electrolysis to continuously produce free chlorine.