Postby Pool Help » Fri 24 Feb, 2006 04:34
Generally:
1- chlorine. If liquid/ shock chlorine is used then you also need conditioner.
2- pH balancer. Depending on the water condition, you need a pH reducer or increaser.
3- algicide. To prevent algea growth.
4- clarifier. To eliminate minute particles suspended in the pool water.
5- ion reducer. Only if you have scale or metal problems.