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    What is this Stain? How to Remove it?

    I just took the cover off my hot tub and noticed staining as seen below on one half of my hot tub. What caused it? How can I remove it? I've tried bleach and Mean Green but that did very little. Thanks! Steve
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    Air in Return - New Filter??

    My equipment is old but I have only owned the house for two years. Last year I replaced the multi-port valve with this (Top Mount Thread-Praher (tm-12-a) - INYOPools.com ) All worked well last year. Starting this year (after winter), there is constantly air in my return. I have to prime the...
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    Algae or Another Big Problem?

    This is my 2nd year as a pool owner. My first year was great with only a couple issues of yellow mustard algae that I was able to quickly correct. This year has been a pain. Every few days the bottom of the pool starts to look a little dingy. Guest would not notice but enough that I know...
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    Closing: Lower Water Before of After Winterizing?

    I have a 17k IG pool in NC with a very high CYA level. So, weather I drain now or next season, I'll have to drain. So, the plan is to drain now. If my pool is 17k and I have a 17k winterizing kit, do I use the full kit or do I use the amount based on how many water I will have after I...
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    High CYA

    Moderator Note - Moved from here: High CYA did a water dump next steps to keep it down? - Page 2 I too have a similar issue with high CYA. It's been around 100-115 all season. Had kept FC at 2 and high on the 4 end (or so I thought it was high until I saw the chart). Just recovered...
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    MA in Shallow-End Return?? Help..

    I've read enough post that I now feel confident to use MA in my vinyl pool. Then the question came to my mind... is it OK to pour MA into the return stream if both of my returns are in the shallow end? Currently, the return stream I would pour it into runs parallel with my wall. Should I...