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Thread: New AG Pool & Water Testing Questions

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    Join Date
    May 2017
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    Fresno, CA
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    New AG Pool & Water Testing Questions

    Hello all! Thanks for the great forum. I have found lots of help in here so far. I have had my new above ground pool up with water and liquid chlorine for 7 days now. I wanted to wait a few days to run all the tests. I have been running FC & PH daily. I have a few questions:

    1) I have standard pool cover that I will be using on the pool while the pool is not in use. Do I still need to worry about adding a stabilizer or conditioner for CYA? (I have not added any stabilizer/conditioner/cyanic acid at all do far). Do I need to? Are there people here that don't need it?

    2) I have only put in 1.5 gallons spread out over the last 7 days despite what the guy at Leslie's said (4 gallons the first week to 2 weeks).

    3) What is my FC goal if I were not to need a stabilizer?

    Iam still trying to get the hang of PoolMath and I attached a screenshot, if someone could make sure Iam doing it right that would be very helpful. Thank you!!

    Screen Shot 2017-05-15 at 2.08.29 PM.jpg
    Here are my numbers:

    FC: 5
    PH 7.8
    Calcium Hardness 250
    TA 130
    CYA 20
    Bestway AG Vinyl Oval
    18' x 9' x 48" ~ 3,548 Gallons
    Sand Filter & Solar Heater
    Elite Spa 86" x 87" ~ 350 Gallons
    TF-100 Test Kit

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    TFP Guide

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    Re: New AG Pool & Water Testing Questions

    The cover will help some with FC burn off but you absolutely want some CYA, I would shoot for 30 ppm as that is where the test starts to read accurately. A pool with 3 ppm FC and no CYA has a much higher concentration of chlorine actively oxidize organics than the same pool with some CYA because much/most of the FC gets bound to the CYA. With no CYA you can have wild swings in sanitation anything from no FC due to bun off, all the way to dry skin and excessive bathing suits wear when the FC is high. One of our chemical experts could give you the exact numbers and how they break down but bottom line CYA is important.

    Your levels look good, your TA might be a tad high but not enough to do anything about if your pH is stable. If you start to have a hard time with maintaining the pH at or below 7.8 try lowering the TA below 100 there is a guide to lowering TA in Pool School. The pool math screen shot is to small for me to read
    12,300 Gallon, IG PebbleFina, 3 ft sheer, 2 Jandy nicheless LED lights, Jandy Pro 1.5HP VS pump (A.O. Smith Motor), PB4-60 Booster pump, Polaris 280, Jandy cv340 cartridge filter, Zodiac Z4 control panel W/iAquaLink, Stenner pumps for chlorine & MA connected to WiOn WiFi switches, TF-100. You can support TFP with AmazonSmile just click the link!

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    Mod Squad zea3's Avatar
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    Re: New AG Pool & Water Testing Questions

    Hi, if you have only used liquid chlorine and no tabs or bags of "shock" then you should not have any CYA at all. What test kit are you using to get your results?
    TFP Moderator
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    Vogue 21' round AG, Pentair 1 hp 2 speed pump, 36 sq ft DE filter, Hayward S180T 150# sand filter, Houston, Texas
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    Re: New AG Pool & Water Testing Questions

    TF-100. (It starts at 20 so thats what i put - I should have been more clear)

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    Re: New AG Pool & Water Testing Questions

    How much Cyanuric Acid do i add based on my signature? I am not sure if i am not using pool math correctly...it says add 0.

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    TFP Guide

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    Re: New AG Pool & Water Testing Questions

    using a pool calculator for a rectangular pool with dimensions of 18' X 9' and a water depth of 3.5' I get 4241 gallons. To increase CYA by 10ppm in 4241 gallons I get 5.7oz by weight.

    one 3" trichlor puck (assuming it's 8oz) would raise your CYA about 8 ppm. I think Walmart sells individual pucks for a couple bucks would be way more economical than buying pure CYA unless you already have some .
    12,300 Gallon, IG PebbleFina, 3 ft sheer, 2 Jandy nicheless LED lights, Jandy Pro 1.5HP VS pump (A.O. Smith Motor), PB4-60 Booster pump, Polaris 280, Jandy cv340 cartridge filter, Zodiac Z4 control panel W/iAquaLink, Stenner pumps for chlorine & MA connected to WiOn WiFi switches, TF-100. You can support TFP with AmazonSmile just click the link!

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