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Thread: Total Dissolved Solids testing

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    Total Dissolved Solids testing

    Most reliable test for Total Dissolved Solids?
    At what point do we concern ourselves with TDS levels?

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    bobodaclown's Avatar
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    Re: Total Dissolved Solids testing

    Don't need to worry about them.

    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: Total Dissolved Solids testing

    Even with small pools in Florida with no backwashing, a lot of evaporation, and where balancing was avoided? There has to be a point where solids will no longer dissolve and chemicals will be ineffective or at least inefficient, no?
    I know it is the 12.1 constant in the Saturation Index formula, anyone else have any thoughts?

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    Re: Total Dissolved Solids testing

    Well, the maximum solubility of salt in 80 degree water is about 360,000 ppm, so I guess when you get near 300,000 TDS you should start to worry.
    JD - 28' Round Above Ground Pool, 17,000 Gallons. Dual speed Jacuzzi pump with cartridge filter. Dual speed 1 HP pump, Hayward S210T sand filter
    Pool School - PoolMath - HIGHLY Recommended Test Kits

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    bobodaclown's Avatar
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    Re: Total Dissolved Solids testing

    Salt, calcium and others all add up to TDS.

    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: Total Dissolved Solids testing

    I found an older post here on TFP answering my questions. Thanks guys. Another tactic used by pool stores I see.

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    bobodaclown's Avatar
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    Re: Total Dissolved Solids testing

    Yahoo. Congrats. Just like old water...

    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: Total Dissolved Solids testing

    Just to put this to bed, TDS is not a parameter that we test for.
    Dave S.
    42k vinyl and concrete pool, 1.5hp pump, 140gpm filter
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