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Thread: Borates testing after boric acid addition

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    Join Date
    Jun 2014
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    Edmond, Oklahoma
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    Borates testing after boric acid addition

    The thread on adding Borax+Muriatic acid recommends waiting 48 hrs before testing for borates. I have, however, decided to go the boric acid route.

    Got my shipment from Duda Diesel last night. I have a question about testing once I add the acid. Can I test immediately, or is it similar to adding them with borax, i.e., I'd need to wait 48 hrs for them to register on the Lamotte strips?

    I am a relatively new owner and am still learning how my pool reacts with chemical additions, vs. the expected results from Poolmath. I have overshot a couple of chemical changes and have since taken to making my adjustments in a couple of smaller stages rather than all at once. I usually add half of what I expect to need for a given chemical, test, then determine if I want to go with the second half as is, or adjust my second addition slightly.

    Pool math says I need roughly 29 lbs. of boric acid to get to 50 ppm for my pool. Ideally, I'd like to add in 2 stages as well.

    Would I need to add, wait 48 hrs. then test? Or since I'm adding boric acid instead of Borax, will a test be accurate once the crystals have dissolved and the pool recirculates for a couple of hrs.?
    12,500 gallon, in-ground Grecian Rectangle (vinyl liner). Installed June 2014. Sand filter, SWG for chlorination. TF-100 test kit.
    Located in Edmond, OK

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    bobodaclown's Avatar
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    Re: Borates testing after boric acid addition

    Once it's in solution it should show up on the test strips. I'd add about 1/2, measure, then add the rest.
    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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    Jun 2014
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    Edmond, Oklahoma
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    Re: Borates testing after boric acid addition

    Thanks bobo. Is the pool swimmable once it's dissolved? Or do I need to run the pump a couple hours before my daughter and her friends get in?
    12,500 gallon, in-ground Grecian Rectangle (vinyl liner). Installed June 2014. Sand filter, SWG for chlorination. TF-100 test kit.
    Located in Edmond, OK

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    Mod Squad jblizzle's Avatar
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    Re: Borates testing after boric acid addition

    You should always run the pump to mix all chemicals at least 30 minutes before swimming.
    Jason, TFP Moderator
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