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Ok - I am pretty confident that it is copper staining. However, I am not comfortable doing this type of treatment on my own. I have been looking for a company online that specializes in stain removal but I am so gun shy with hiring people b/c of all the mishaps that have taken place with this...

Ok friends - so since we got the pool balanced sometimes after we add FC these marks show up all over the pool. At first I thought it was a build up from all the calcium and copper we were fixing. We use a robot to clean it but it doesn’t touch these. If we hand scrub it will come off but I...

I did enter - just wanted to double check. Thank you!

Trying to understand if I need to do additional math with this reading to determine how much I need to add. Is the 6.2oz what I add or do I need to multiply by my pool volume?

Will do!! I have a feeling FC and I are going to become BFFs. Our pool is in direct sunlight with no shade starting at noon until sunset.

The water looks clear. I am going to get in this weekend and clean the stair walls and water line by hand. Fingers crossed the more of the areas will clear up.

The temp was 71. We have not turned the heater on yet.

We are almost there!!! 🤩🐬☀️ pH - 7.8 FC - 7.5 CC - 0.5 TC - 8.0 CH - 450 TA - 100 CYA - 50 CSI - .31

Should I have the heater serviced? Would they be able to check and tell me if something is wrong

When will it be OK to use our heater again? When we aren’t using it should we continue to keep the bypass closed?

Got it, thanks. When I went back into my Pool Math to add the temp and it will not allow me to update it. Do I need to re-enter all my info again?

The shell has random dark spots on the bottom that are not coming off. The water line around the entire pool is pretty bad. The step walls have brown spotting. Everything appears like it will come off with a good scrubbing except for the spots on the bottom of the pool. We put a new filter...

What is CSI? I do not see that in the kit?

Ok, that is what gave me those numbers so I will not add acid until the FC goes down.

CH is at 575 - could the FC be contributing to that number as well?

FC - 12.5 CC - 1 TC - 13.5 Are you referring to this test as the FAS-DPD?

Is this product the same as the 31.45% - 20 BAUME option in the pH section of Pool Math?