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Thread: theory on borates and algae from another website and TA ?'s

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    theory on borates and algae from another website and TA ?'s

    On askalanaquestion.com, their explanation on how borates affect algae is that it reduces the amount of CO2 that the water can absorb and basically suffocates algae. The site was very limited about other benefits, but did recommend levels of 30-50 ppm.

    With my new liner (in for about a month now), i haven't totally borated our pool- instead, I'm using trichlor in a chlorine feeder until my CYA gets to about 30-50, and then I intend to switch to cal hypo (not in the feeder tho- heard that's not good- can explode!). In the meantime, while my chlorine input is exclusively trichlor, I'm occasionally adjusting pH with borax.

    Things I can tell so far about the benefits of borated water:

    seems line smoother water
    easy on the eyes
    crystal clear
    scum line is almost nonexistant (altho we haven't had a lot of sunscreen products introduced yet by bathers)

    On the HTH test strips, my TA shows 120 (since the day we filled up the pool with tap water)- another reason for adjusting pH with borax instead of sodium carbonate (altho the borax will increase TA, but not as much as sod carb). Can I expect the CYA levels to help drop my TA any if I go light on the borax and just aerate (I've got a wall mounted fountain I can use)? Or to reduce TA, should I use MA and aerate.

    This site ROCKS!!!!

    jm
    14'x28' vinyl liner inground 3.5-6' deep wedge hopper 15000 gal (used to say 13000- I calculated wrong), 1 hp pump with sand filter, 2 returns, 1 fountain, traditional chlorinated, pool house.

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    Join Date
    Feb 2008
    Location
    Denton, TX
    Posts
    5,061

    Re: theory on borates and algae from another website and TA ?'s

    CYA won't really affect your TA. The best way to lower TA is by acid additions and aeration.

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    Join Date
    Mar 2007
    Location
    San Rafael, CA USA
    Posts
    12,082

    Re: theory on borates and algae from another website and TA ?'s

    The part about borates reducing CO2 and suffocating algae is just a bunch of bunk. The amount of carbon dioxide in the water is based on the amount of carbonates which is mostly what gets measured with TA and is also dependent on the pH. The borates have no effect on this (except for a very minor effect of ionic strength, but we're talking very minor).
    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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    Re: theory on borates and algae from another website and TA ?'s

    makes sense
    14'x28' vinyl liner inground 3.5-6' deep wedge hopper 15000 gal (used to say 13000- I calculated wrong), 1 hp pump with sand filter, 2 returns, 1 fountain, traditional chlorinated, pool house.

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