Quote Originally Posted by moreyes View Post
I called Aquarite and they said to get the phosphate below 100ppb it was at 1000 ppb.

Can I ask you a silly question? What is the combined chlorine? and how do you get it?
Phosphates are usually a moot point unless you're having algae problems that you can't control otherwise...aome pool stores are famous for pushing them because they make a lot of money off of them when they're really not necessary.

Combined chlorine is chlorine that is bound up by something it's trying to sanitize, andis the primary indicator of when your pool needs to be shocked, because it indicates that there is something in your water that needs to be cleaned up. You need to use a drop-based test kit (the pool store can test for you, just don't buy all the stuff they're going to tell you that you need) to test for it. Your total chlorine is obviously the total amount of chlorine in your water. Your free chlorine is chlorine that's available to fight "gunk" in the water, and combined chlorine is the chlorine that's currently busy doing the fighting. So CC + FC = TC.

Janet