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Thread: Incorret readings many times

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    Catanzaro's Avatar
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    Incorret readings many times

    This morning I checked the FC with the extended test kit to determine how much FC I am loosing daily. It is approximately 3 ppm per day. Everything else was in check from TA, CYA, etc. TA is around 100. CYA is around 40-45 and FC is kept between 3-5 daily. CC = 0.

    Although approximately 20-30 minutes after filter turned on I checked the PH level and the readings were extremely low (All the way at the bottom). They were at 7.6 a few days ago. I checked again with the same results at least 3 more times from the same water sample and had no success. Each time rinsing the testing kit.

    Then I obtained another sample and checked 2 more times. Finally the readings were normal. I placed too many drops from the agent bottle the first time.

    Q: What could have possibly gone wrong? The kit was ordered 12 months ago. Water is clean with very little dirt in the pool. Filter on 12 hours per day. Or what are the possible causes of significant PH drop over a day or so.
    14,700 gallons IG Pool Vinyl Liner - Octal Circulation System
    Hayward Pro-Series 350 LB. Sand Filter Model # S270T - 2" Plumping
    Hayward CL2002 Chlorinator - Hayward Super Pump 2 HP Model # k48m2n111
    Hayward AQR9 SWG 25K Salt Cell & TF-100 Test Kit + Speed Stir
    Gulfstream HE125RA - 117K BTU Heat Pump - Date of Build is 11-2013

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    Patrick_B's Avatar
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    Re: Incorret readings many times

    Which kit are your using for pH testing when you say too many drops of reagent? The pH dropping over 2 days is not something that would happen without something going into the pool to lower it.
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    Mod Squad Bama Rambler's Avatar
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    Re: Incorret readings many times

    How do you normally chlorinate your pool?
    Dave J. TFP Moderator
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    Re: Incorret readings many times

    I used the Taylor 1000 Test Kit from the TF-100 Kit. Also, I used the liquid chlorine method only. I pour approximately 45 ounces of 12.5% liquid chlorine diluted in 5 gallon buckets of water. Each 15% mix is about 4 gallons and then poured in front of a return jet. Last week I added borax to raise the PH level from 7.2 to about 7.6. Diluted the Borax in water and mixed with a mixer and drill and broadcasted all over the pool.

    It appeared that as I squeezed the dropper this morning, more then one drop came out. First time this happened.
    14,700 gallons IG Pool Vinyl Liner - Octal Circulation System
    Hayward Pro-Series 350 LB. Sand Filter Model # S270T - 2" Plumping
    Hayward CL2002 Chlorinator - Hayward Super Pump 2 HP Model # k48m2n111
    Hayward AQR9 SWG 25K Salt Cell & TF-100 Test Kit + Speed Stir
    Gulfstream HE125RA - 117K BTU Heat Pump - Date of Build is 11-2013

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    Patrick_B's Avatar
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    Re: Incorret readings many times

    Ok, simply re-test with the correct amount Anderson see what you get. I suggest pouring the bleach in front of a return jet to the pool as opposed to the skimmer.
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    Catanzaro's Avatar
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    Re: Incorret readings many times

    Sorry, I meant return jet & not skimmer. What is the correct amount Anderson?
    14,700 gallons IG Pool Vinyl Liner - Octal Circulation System
    Hayward Pro-Series 350 LB. Sand Filter Model # S270T - 2" Plumping
    Hayward CL2002 Chlorinator - Hayward Super Pump 2 HP Model # k48m2n111
    Hayward AQR9 SWG 25K Salt Cell & TF-100 Test Kit + Speed Stir
    Gulfstream HE125RA - 117K BTU Heat Pump - Date of Build is 11-2013

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