The amount of chemicals you need depends on the size of your pool, the level of use, exposure to the elements, and a few other factors. However, the average cost of most chemicals is as follows:
• Chlorine - $55 to $130 per year
• Bromine - $30 to $50 per year
• Algaecides - $360 to $405 per year
• Clarifiers - $30 per year
• Stain or Metal Removal/Prevention - $210 to $310 per year
• Pool Shock - $340 per year
• Oil Absorbing Sponge - $5 to $10 per year
You may have additional costs for your saltwater pool due to its unique requirements. Also, keep in mind that the numbers above are just an average and may not be typical for your pool size and level of use.