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With my numbers plugged in to Pool Math it says my CSI is -.15 & should be -.41, so I am completely at a loss. I must be doing something wrong. The salt content is automatically set at 1000, so I don't test for that, is that a problem? How do I get calcium scaling with such a low CSI, or am I...

PH started at 8.0. Added ph down 3 times and ph never got lower than 7.2. For the last week it has been 7.2. Previously after first ph down addition it was 7.5. Neither seems out of line. I test ph everyday. Pool has been around 80 degrees the past 2 weeks. Is it the TA or CH causing this? Will...

My PH has been staying at 7.2. Started at 8.0 in the beginning. If it is scale, is the liner toast or can it be removed? Always had low PH with my previous pool. I am scared of Muriatic acid, as I have no where to store it. Thanks.

Finally got my 18 foot pool up the middle of July. Have the TF-100 Test Kit & have been sailing along with my testing & liquid chlorine adding every night. No one has been in the pool for about 2 weeks. I have a new clear solar cover that has been on all this time. This past week when I would...

We had an all steel pool including top & bottom rails that we put up in 1998. just took it down last year as the liner went after 19 seasons & we want a smaller one. Not a bit of rust on any rails or sides except for where the eyeball leaked at one time. I would think this was a midgrade pool...

Thanks for the welcome! Got side tracked after this post. Probably will have questions soon.

Hi, I am new to the forum as a registered user, but have read it before & have learned a lot. We had a 27 foot round pool for 18 years (19 seasons) before the liner sprung a leak last August. We decided to remove the pool, as we never used it enough & always found the size cumbersome. The...