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Thread: Need some advice on CYA, TA, & CH

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    Judodad's Avatar
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    Need some advice on CYA, TA, & CH

    Using my TF-100 Test Kit here's my readings

    FC = 5.5
    CC = 0.5
    CH = 350
    TA = 50
    CYA = 20
    PH = 7.8

    Sounds like I need to add stabilizer and I'd like to get my CH to 300. I've never had TA that low.
    Thanks in advance for your help.
    17k gal., IG, Pebble Sheen,150 GPM Cartridge CCP420 Pentair 420 Sq.ft Filter, 3 HP Pentair Intelliflo VS-3050 Pump, Letro Legend 4 Wheel Cleaner, 2 HP Pentair Booster Pump, Pentair Intellichlor SWG, Easy Touch Control System With Remote, Intellibrite Led Light, Waterfall, Oklahoma Flagstone Coping, Tanning Ledge w Bubblers, 2 Skimmers, 4 Returns, Built In January 2011.

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    Re: Need some advice on CYA, TA, & CH

    I agree with most of your assesment.

    1. Raise TA to 100 using baking soda

    2. Recheck pH...lower if 8.0 or above

    3. Raise CYA to 50 ppm

    Leave CH alone....it's fine and will slowly rise.

    How does your water look?
    Dave S.
    42k vinyl and concrete pool, 1.5hp pump, 140gpm filter
    TFTestkits , PoolMath , Pool School

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    bobodaclown's Avatar
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    Re: Need some advice on CYA, TA, & CH

    5lbs of Baking Soda will raise the TA from 50-70. Pool math is your friend. http://www.troublefreepool.com/calc.html
    I wouldn't worry about CH. I run my CH at 500.
    I'd bump up the CYA to 75 or so about 8 lbs.

    What's your salt at?
    17K Kidney Shaped Pool Concrete (Diamond Bright) Pool, 3/4 hp 2 speed 115V Sta-rite Duraglas PEA5D-180L/P2R5D-181L (Impeller C105-92PS Diffuser C1-216P), 1.5 piping, Pentair CC100 Filter , Heat Siphon 100K BTU Heat Pump Pool Heater, Flow meter Blue White Flowmeter Model No. F-30150P, Hayward Astrolight SP0581N, SWCG CalimarTitanium Edition TE45 , Dolphin Nautilus Plus with CleverClean, Lakeland Florida

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    Re: Need some advice on CYA, TA, & CH

    EDIT - I overlooked your SWG....bobodaclown is correct....CYA 75. Sorry!
    Dave S.
    42k vinyl and concrete pool, 1.5hp pump, 140gpm filter
    TFTestkits , PoolMath , Pool School

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    Judodad's Avatar
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    Re: Need some advice on CYA, TA, & CH

    Water is clear, salt is 3500. I was thinking the same thing after plugging it in to the pool math calculator but I wanted to make sure I wasn't overlooking something. Thanks for the advice guys!
    17k gal., IG, Pebble Sheen,150 GPM Cartridge CCP420 Pentair 420 Sq.ft Filter, 3 HP Pentair Intelliflo VS-3050 Pump, Letro Legend 4 Wheel Cleaner, 2 HP Pentair Booster Pump, Pentair Intellichlor SWG, Easy Touch Control System With Remote, Intellibrite Led Light, Waterfall, Oklahoma Flagstone Coping, Tanning Ledge w Bubblers, 2 Skimmers, 4 Returns, Built In January 2011.

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