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Thread: Borates for a New Pool

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    Join Date
    Mar 2011
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    Houston, Texas
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    Borates for a New Pool

    I am looking for a recommendation on whether I should add borates to my pool. My pool is almost five months old. About a month ago I added a SWCG and it works well. The issue is that I'm still adding a couple of pints of MA every few days to my pool because my ph is continuing to rise. I know that my Luna Quartz is still curing and I also am probably getting aeration from my spill over spa and my 2 hp pump may be causing the rise as well (when it runs there is visible circulation on the pool surface). I also expected the SWCG to cause my ph to rise. With these things in mind, would borates help slow the rise in ph? Here are my current numbers:

    FC 5.0
    TC 5.0
    TA 80
    ph 7.6
    Salt 3,400
    9,200 gal. Gunite Luna Quartz French Grey pool with spill over spa, two fountains on tanning ledge (rarely used)
    Pentair Whisperflo 2HP, Pentair CCP Cartridge 420 Sq. Ft., Polaris 280 with booster pump
    Pentair EasyTouch 4, RayPak LoNox 266k Natural Gas heater, Aqua Rite SWCG T Cell 9, Borates, TF-100 test kit

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    dmanb2b's Avatar
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    Apr 2009
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    NY
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    Re: Borates for a New Pool

    I would think so...also targeting a TA of 60 would also help
    24'x52" AGP (13,500 Gallons), Intex SWG, (2)Solar Bear 4x20 panels, Hayward S220T Filter, 1/2hp Pentair Superflo

    Pool School, TFTestKits, Pool Calculator

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    Re: Borates for a New Pool

    Lowering the TA will help some. Adding borates technically just slows down the rate of pH rise, but you still need to add as much acid as before though you add it less frequently. If the borates end up inhibiting nascent algae growth that lets you turn down the SWG on-time, then that will reduce the rate of pH rise. This is also why an SWG pool should have a higher CYA level closer to 80 ppm since that cuts down chlorine loss from sunlight letting you turn down the SWG on-time. This is described in Water Balance for SWGs in the Pool School.
    16,000 gallon outdoor in-ground 16'x32' plaster pool; Pentair Intelliflo VF pump; Pentair IntelliTouch i9+3s control system; Jandy CL-340 square foot cartridge filter
    12 Fafco solar panels; Purex Triton PowerMax 250 natural gas heater (200,000 BTU/hr output); automatic electric pool safety cover; 4-wheel pressure-side "The Pool Cleaner"

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    Mar 2011
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    Houston, Texas
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    Re: Borates for a New Pool

    Thanks.
    9,200 gal. Gunite Luna Quartz French Grey pool with spill over spa, two fountains on tanning ledge (rarely used)
    Pentair Whisperflo 2HP, Pentair CCP Cartridge 420 Sq. Ft., Polaris 280 with booster pump
    Pentair EasyTouch 4, RayPak LoNox 266k Natural Gas heater, Aqua Rite SWCG T Cell 9, Borates, TF-100 test kit

  5. Back To Top    #5

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    Mar 2011
    Location
    Houston, Texas
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    Re: Borates for a New Pool

    I put borax and MA in the pool yesterday evening. Pretty easy although it took longer to dissolve than I expected--much longer than it took the salt to dissolve when I added it for my SWCG. For my pool it only took 7 boxes of 20 Mule and just a little over 2 gallons of MA (total cost about $35). I had to adjust the ph slightly this morning, but so far so good. I like the smell of the water.
    9,200 gal. Gunite Luna Quartz French Grey pool with spill over spa, two fountains on tanning ledge (rarely used)
    Pentair Whisperflo 2HP, Pentair CCP Cartridge 420 Sq. Ft., Polaris 280 with booster pump
    Pentair EasyTouch 4, RayPak LoNox 266k Natural Gas heater, Aqua Rite SWCG T Cell 9, Borates, TF-100 test kit

  6. Back To Top    #6

    Join Date
    Mar 2011
    Location
    Houston, Texas
    Posts
    413

    Re: Borates for a New Pool

    Borates have been in the pool for two days and you can see the difference. My water was very clear before, but now it really sparkles. I highly recommend it. I don't see a down side--except for the expense which in my case was very reasonable. I can't tell yet whether it will slow the pH rise.
    9,200 gal. Gunite Luna Quartz French Grey pool with spill over spa, two fountains on tanning ledge (rarely used)
    Pentair Whisperflo 2HP, Pentair CCP Cartridge 420 Sq. Ft., Polaris 280 with booster pump
    Pentair EasyTouch 4, RayPak LoNox 266k Natural Gas heater, Aqua Rite SWCG T Cell 9, Borates, TF-100 test kit

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