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Thread: Well Water Test With TF-100

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    Green1340's Avatar
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    Well Water Test With TF-100

    Just received the TF-100 test kit and tested the well water that I would like to fill the pool with.

    PH- 6.8
    CH- 570
    TA- 400

    I know I can deal with the PH and TA according to Pool School. How would I deal with the CH levels? I do have city water and could do a partial fill with city water if that would be a possibility. I haven't tested city water yet but I am certain they don't have the same levels as the well water. What do you think? Is this water worth using or will it be more trouble than it is worth? Thanks for your input.

    Greenhaw
    Freeform Gunite, 21K Gallons, Gray Plaster, 570 sq. ft., 106 Perimeter.
    Pentair- VS 3050, Intellichlor IC-40, 520 sq. ft Cartridge Filter, Intellibrite LED.
    Sun Touch Controller, Legend Platinum Cleaner with Pentair 1.5 hp Booster Pump.
    2- Bubblers & 2- Deck Jets. Autofill & Overflow. TF-100-Test Kit.

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    Richard320's Avatar
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    Re: Well Water Test With TF-100

    If you have a choice, use the city water. That CH is way too high. You'll be fighting scale from day one.
    16K freeform gunite with spa; Pentair 4000 DE filter; Century Whisperflow 1 HP; Pentair Minimax heater.
    Troublefree does not mean Maintenancefree. It's like brushing your teeth: You can spend a couple minutes a day and pennies a week or go to the dentist once a year and spend several thousand dollars.
    A pool is like a pet - you have to feed it every day, even the days you don't want to play with it!

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    Green1340's Avatar
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    Re: Well Water Test With TF-100

    I suppose that the autofill line should also be plumbed into the city water as well. Over time topping the pool off with well water would create the same concerns in years to come. Am I correct there?

    Greenhaw
    Freeform Gunite, 21K Gallons, Gray Plaster, 570 sq. ft., 106 Perimeter.
    Pentair- VS 3050, Intellichlor IC-40, 520 sq. ft Cartridge Filter, Intellibrite LED.
    Sun Touch Controller, Legend Platinum Cleaner with Pentair 1.5 hp Booster Pump.
    2- Bubblers & 2- Deck Jets. Autofill & Overflow. TF-100-Test Kit.

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    Richard320's Avatar
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    Re: Well Water Test With TF-100

    Quote Originally Posted by Green1340
    I suppose that the autofill line should also be plumbed into the city water as well. Over time topping the pool off with well water would create the same concerns in years to come. Am I correct there?

    Greenhaw
    I would think so. Then again, if the city water has really low CH, you could blend them. Test it.
    16K freeform gunite with spa; Pentair 4000 DE filter; Century Whisperflow 1 HP; Pentair Minimax heater.
    Troublefree does not mean Maintenancefree. It's like brushing your teeth: You can spend a couple minutes a day and pennies a week or go to the dentist once a year and spend several thousand dollars.
    A pool is like a pet - you have to feed it every day, even the days you don't want to play with it!

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    Green1340's Avatar
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    Re: Well Water Test With TF-100

    Tested the city water, it has a CH- 70. That is much more manageable.

    If my calculations are correct, a 50/50 mix would give me a calculated CH of 320. I think I will go with 60-65% city water. That should keep me closer to the CH of 300. How does that sound? I can always add a little calcium if needed.

    Greenhaw
    Freeform Gunite, 21K Gallons, Gray Plaster, 570 sq. ft., 106 Perimeter.
    Pentair- VS 3050, Intellichlor IC-40, 520 sq. ft Cartridge Filter, Intellibrite LED.
    Sun Touch Controller, Legend Platinum Cleaner with Pentair 1.5 hp Booster Pump.
    2- Bubblers & 2- Deck Jets. Autofill & Overflow. TF-100-Test Kit.

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    Green1340's Avatar
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    Re: Well Water Test With TF-100

    What would be a good CH number to shoot for while filling the pool?

    Greenhaw
    Freeform Gunite, 21K Gallons, Gray Plaster, 570 sq. ft., 106 Perimeter.
    Pentair- VS 3050, Intellichlor IC-40, 520 sq. ft Cartridge Filter, Intellibrite LED.
    Sun Touch Controller, Legend Platinum Cleaner with Pentair 1.5 hp Booster Pump.
    2- Bubblers & 2- Deck Jets. Autofill & Overflow. TF-100-Test Kit.

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    JasonLion's Avatar
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    Re: Well Water Test With TF-100

    I would aim for a CH level of 250 to start with. The CH level is likely to go up over time unless you use 100% city water, so it is best to start out on the low end of the range.
    19K gal, vinyl, 1/2 HP WhisperFlo pump, 200 sqft cartridge filter, AutoPilot Digital SWG, Dolphin Dynamic cleaning robot
    Creator of PoolMath and Pool Calculator. Other handy links: Support this site, TF Test Kits, Pool School

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