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Thread: Pool Startup

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    Sfpat's Avatar
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    Pool Startup

    As I posted in the Introduction section, I found this site last month while looking for start-up directions for my newly replastered pool. Since then, I have read a lot on the TFP method and have converted from tabs to liquid chlorine and now understand the impact tabs and shock have had on my prior practice.

    My pool is about 40 years old. I've owned it for 16 years and have maintained it myself (with "advice" from a local independent pool supply company) using tabs and shock and with relatively good results. I always tested the water myself using a standard test kit from the pool store (FC,CC pH, TA) and had monthly tests done by my local pool store. The only time I added stabilizer was when I first bought the house. A few years ago though, I had a severe algae problem and was unable to clear it up despite spending hundreds of dollars on shock and algeacide. I finally drained and manually cleaned the pool with Clorox. Upon restarting, I went back to the normal tabs and shock and got the pool back to "normal".

    I now understand that the CYA level must have been way out of range (though my pool store never alerted me to high CYA ) and by draining the pool was able to achieve lower CYA levels to allow the chemicals to work, even if that wasn't my intent. Upon this current start-up, I have followed the advice given here and have switched to liquid chlorine. My pool water sparkles. I still have a bucket of 3" tabs which I will gradually use over time for when I am out of town and 25 lbs of shock that I don't intend to use.

    I also got a TA-100 test kit which arrived yesterday. First results FC - 7.5 ppm, pH - 7.5, TA - 100, CH - 300, CYA - 45 (I didn't test CC or CA)

    And after reading some of the threads on the pool build section, I don't feel too bad about my rebuild project. In addition to replastering, I had tile and coping replaced, new lights and a safety fence installed (grandkids). My contractor quoted 2 weeks to complete but wound up taking 14 weeks. His constant refrain was "this is a big pool" and I have "bigger" projects to complete, i.e. new builds. My grandkids were disappointed to miss most of the swim season and and my wife was not happy with cancelling our traditional 4th of July party but in the end the pool turned out great.
    40 year old pool, 35k gal w/spa, gunite replastered July 2016, Hayward Sand filter, Hayward 1.5 hp single speed pump, TF-100, Kreepy Krauly suction side cleaner

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    needsajet's Avatar
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    Jan 2016
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    Re: Pool Startup

    Congratulations on the restart and welcome to TFP! Good to have you here Sorry to hear about the letdown from one of the promisers. I hope next year's party makes up for it all.
    12k IG salt; glass beads in plaster; K-2006C, K-1766, CCL, and Aussie 4in1 (HTH); Pentair Eco800 1.2HP VS; Zodiac SWC 1.3 lb/day (25 g/hr); 25" filter recycled glass; OKU solar panels; 1/2 HP solar pump; Rebel (Warrior) pool cleaner; FlowViz; prior pool AG 10k | Read Before Posting to get the best possible advice | ... and this helped me a lot!: TFPC for Beginners

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    Sfpat's Avatar
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    Re: Pool Startup

    Took a water sample to the pool store today to check my numbers. They all matched except for CYA which the pool store said was 90 (to them normal is between 30-100 so they weren't concerned). I retested for CYA and again got results between 45-50 (three times). With the pool water sparkling and no CC, I'll stay with CYA of ~ 45 and continue to maintain FC between 7 and 4 ppm.
    40 year old pool, 35k gal w/spa, gunite replastered July 2016, Hayward Sand filter, Hayward 1.5 hp single speed pump, TF-100, Kreepy Krauly suction side cleaner

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    jeffchap's Avatar
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    Jun 2012
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    Re: Pool Startup

    Round up your CYA to the next highest multiple of 10, so 50 in your case, and use that value to determine your FC target.

    The CYA measurement scale is logarithmic, not linear, so halfway between 40 and 50 is not 45. It's a rather subjective test anyway, so 10 ppm either way is within the margin of error.
    25000 gallon free-form gunite
    Jandy Stealth pump/CL340 cartridge filter
    Pentair IC40 SWG
    Pentair MasterTemp 250HD heater
    Jandy AquaLink RS automation

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