Quote Originally Posted by Watermom
A couple of things are making it difficult to know what to tell you to help. Your cya readings are all over the place. It makes a difference in how much chlorine we recommend that you add. Also, we need to know what your cl level is. Not just 5+. Can you use the dilution method described above and try and get a more defined reading? Also, try your cya test again. I know your pool store did it for you, but many pool stores give rather "shaky" readings and we are pretty apprehensive to rely on them. Someone else can better advise you about cleaning cartridge filters. I have never had one.

I know my CYA reading have been all over the place. In the past I have relied on the pool store. So I may be doing it wrong. I should slowly put drops in the canister waiting for the black dot to completely disappear correct? When the poll store does the test for me they stop when you can faintly see the dot. When I test it I keep going until I can't see any black dot at all. Which is the correct way? I just tested the water again and I came up with CYA about 70. That is when the dot completely went away.

Thanks for all your patience