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Thread: Latest Results/Safe To Swim?

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    dmccoyTFP's Avatar
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    Latest Results/Safe To Swim?

    My latest test results below:

    pH = 7.5
    FC = 14
    CC = 0.5
    CH = 75
    TA = 120
    CYA = 100

    When I've performed the daily test the last few days, the Cl hasn't even registered, it is orange which I'm assuming is well above 5 ppm. So, I guess my big question is, is it safe to swim or is the chlorine level too high?

    Some additional info:

    • I shocked the pool on Monday. Since then we have been getting rain and not much sun.
    • I've been trying to do partial drains and adding new water periodically throughout the week


    Suggestions? Thanks in advance!
    David McCoy
    11K gal, IG fiberglass, Hayward self-priming pump, Pentair FNS Plus filter DE filter, Polaris cleaning robot, TF-100 test kit

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    AimeeH's Avatar
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    Re: Latest Results/Safe To Swim?

    HI there

    I think you should consider doing a diluted test on your CYA so you can be sure of the 100 reading. It may be much higher. That is the important number to know where your chlorine needs to be. 100 is difficult to manage without draining to get that down, but it could be higher even. See link below for extended directions

    Pool School - CYA

    And have you taken a look at the basics here. Pool School - ABCs of Pool Water Chemistry
    18*36*23 true "L" vinyl IG 29,000 gallons. SWG. TF-100 test kit.
    http://tftestkits.net/splash-page.html

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    Re: Latest Results/Safe To Swim?

    Quote Originally Posted by AimeeH View Post
    HI there

    I think you should consider doing a diluted test on your CYA so you can be sure of the 100 reading. It may be much higher. That is the important number to know where your chlorine needs to be. 100 is difficult to manage without draining to get that down, but it could be higher even. See link below for extended directions

    Pool School - CYA

    And have you taken a look at the basics here. Pool School - ABCs of Pool Water Chemistry
    Thank you for the reply! I have looked at both of those but am a newbie to pool maintenance so still in the learning stage.

    I performed the diluted test with the CYA coming back as 160. What do you suggest?
    David McCoy
    11K gal, IG fiberglass, Hayward self-priming pump, Pentair FNS Plus filter DE filter, Polaris cleaning robot, TF-100 test kit

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    Re: Latest Results/Safe To Swim?

    Have you been using pucks for chlorine?

    160 is extremely high. See this for recommendation of CYA
    Pool School - Chlorine / CYA Chart
    Matt
    2016 Pool Build: 12k IG Blue Granite Pebblesheen, Travertine Coping & Pavers, Pentair IntelliFlo, Intellichlor, Easytouch, Clean & Clear 320, Heliocol Solar - TF-100 test kit w/ SpeedStir
    SWG Run Time Calculator

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    dmccoyTFP's Avatar
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    Re: Latest Results/Safe To Swim?

    Quote Originally Posted by mgmoore7 View Post
    Have you been using pucks for chlorine?

    160 is extremely high. See this for recommendation of CYA
    Pool School - Chlorine / CYA Chart
    Yes, 3" chlorinated tablets. I've had the feeder set to 1.5 practically the whole week but turned it off yesterday after doing the daily test when it seemed like the chlorine level just wasn't going down the past few days.
    David McCoy
    11K gal, IG fiberglass, Hayward self-priming pump, Pentair FNS Plus filter DE filter, Polaris cleaning robot, TF-100 test kit

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    Re: Latest Results/Safe To Swim?

    In regard to is it safe. If your CYA is 160, 14 is safe but probably not high enough to keep the bad stuff away or from grow. The chart below goes up to 120 CYA with a target of 13.6.

    What you really need to be doing is draining a bunch of water and get it down to recommended CYA levels.
    Matt
    2016 Pool Build: 12k IG Blue Granite Pebblesheen, Travertine Coping & Pavers, Pentair IntelliFlo, Intellichlor, Easytouch, Clean & Clear 320, Heliocol Solar - TF-100 test kit w/ SpeedStir
    SWG Run Time Calculator

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    Re: Latest Results/Safe To Swim?

    If it were my pool, I would drain and refill. My CYA was around 150, I drained. As you have a rather small pool, would be an easy drain/refill and balance.
    Valley of the Sun, Arizona.....10k gunite/pebble (Re-surface March 2015) w/in floor Caretaker 99 cleaning heads -- Pentair FNS 60 DE filter -- Pentair IntelliFlo Variable Speed for pool -- Pentair Wisperflo 1 HP for boulder waterfall...Taylor K-2006 & Taylor K-2006C kits

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    Re: Latest Results/Safe To Swim?

    I concur that draining is your best option with CYA that high it will be more manageable with lower cya.
    18*36*23 true "L" vinyl IG 29,000 gallons. SWG. TF-100 test kit.
    http://tftestkits.net/splash-page.html

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    Re: Latest Results/Safe To Swim?

    You probably understand that using the tablets will cause your CYA to constantly increase. If you drain and refill, and continue to use tablets, you'll be draining and refilling again in the future. We recommend using liquid chlorine (from pool store or regular concentrated bleach from the grocery store). If you do that, then CYA will not increase.
    27,500 gallon in ground gunite/plaster (1995). Attached Spa with fountain, spillway, and 2 lion heads streaming into the pool. Hayward pump and AO Smith UST1152 1.5 hp motor (single speed). Hayward 60 sq ft DE Filter (Model DE-6000). Kreepy Krauly cleaner.

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    dmccoyTFP's Avatar
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    Re: Latest Results/Safe To Swim?

    With regards to draining, are we talking about a complete drain or partial one? I thought I've read that draining the pool completely is a bad idea/dangerous? If it's a partial drain, how low is safe to go?
    David McCoy
    11K gal, IG fiberglass, Hayward self-priming pump, Pentair FNS Plus filter DE filter, Polaris cleaning robot, TF-100 test kit

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    Re: Latest Results/Safe To Swim?

    Quote Originally Posted by dmccoyTFP View Post
    Yes, 3" chlorinated tablets. I've had the feeder set to 1.5 practically the whole week but turned it off yesterday after doing the daily test when it seemed like the chlorine level just wasn't going down the past few days.
    See the links posted on chlorine/cya and ABC's for a refresher? If your cya is that high, your chlorine needs to be that high (or higher) Those pucks are constantly adding more CYA too.

    I thought I saw in another thread that you are using the TF-100 kit, if so it helps if you put that in your signature. If that's the kit you have, you need to be testing your chlorine with the FAS-DPD test for accuracy at higher chlorine levels.

    - - - Updated - - -

    Quote Originally Posted by dmccoyTFP View Post
    With regards to draining, are we talking about a complete drain or partial one? I thought I've read that draining the pool completely is a bad idea/dangerous? If it's a partial drain, how low is safe to go?
    Several partial drains and refills may be the rout you need to tak as it indeed can be a risk to drain too much out.

    Have you used pool math yet? The link is at the top of the web page. You can plug in your "now" numbers and your target number for chemical addition amounts as well as drain suggestion. But at 120 CYA an exchange of 50% of your water would put your CYA at 60 which is still on the high side but more manageable than what you have to work with now.
    18*36*23 true "L" vinyl IG 29,000 gallons. SWG. TF-100 test kit.
    http://tftestkits.net/splash-page.html

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    dmccoyTFP's Avatar
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    Re: Latest Results/Safe To Swim?

    Quote Originally Posted by AimeeH View Post
    See the links posted on chlorine/cya and ABC's for a refresher? If your cya is that high, your chlorine needs to be that high (or higher) Those pucks are constantly adding more CYA too.

    I thought I saw in another thread that you are using the TF-100 kit, if so it helps if you put that in your signature. If that's the kit you have, you need to be testing your chlorine with the FAS-DPD test for accuracy at higher chlorine levels.
    Yes, I am using the TF-100 test kit. Thank you for the suggestion. I just added it to my signature. Is the FAS-DPD test a separate kit I need to purchase?

    - - - Updated - - -



    Quote Originally Posted by AimeeH View Post
    Several partial drains and refills may be the rout you need to tak as it indeed can be a risk to drain too much out.

    Have you used pool math yet? The link is at the top of the web page. You can plug in your "now" numbers and your target number for chemical addition amounts as well as drain suggestion. But at 120 CYA an exchange of 50% of your water would put your CYA at 60 which is still on the high side but more manageable than what you have to work with now.
    I have attempted to use pool math. Still trying to grasp everything being a complete rookie. It's a big overwhelming but I'm learning more and more every day. LOL

    I must have missed the drain section but I will go back and check. Thanks so much again!
    David McCoy
    11K gal, IG fiberglass, Hayward self-priming pump, Pentair FNS Plus filter DE filter, Polaris cleaning robot, TF-100 test kit

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    Re: Latest Results/Safe To Swim?

    The fas-dpd chlorine test uses the r-0870 powder and the r-0871 reagent. Instructions should be in the kit.

    We were all rookies once. I know I was. So don't sweat it. You'll always get help here on the forum.

    Pool math should tell you a reccomended amount to drain if you put your current cya in the now section and your target in. But we can safely say at least 50% is a good target for now.
    18*36*23 true "L" vinyl IG 29,000 gallons. SWG. TF-100 test kit.
    http://tftestkits.net/splash-page.html

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    dmccoyTFP's Avatar
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    Re: Latest Results/Safe To Swim?

    Quote Originally Posted by AimeeH View Post
    The fas-dpd chlorine test uses the r-0870 powder and the r-0871 reagent. Instructions should be in the kit.

    We were all rookies once. I know I was. So don't sweat it. You'll always get help here on the forum.

    Pool math should tell you a reccomended amount to drain if you put your current cya in the now section and your target in. But we can safely say at least 50% is a good target for now.
    Ah, ok. Then yes, that's the test I performed to arrive at the FC and CC values. Just didn't realize it was called FAS-DPD.
    David McCoy
    11K gal, IG fiberglass, Hayward self-priming pump, Pentair FNS Plus filter DE filter, Polaris cleaning robot, TF-100 test kit

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    Re: Latest Results/Safe To Swim?

    Quote Originally Posted by dmccoyTFP View Post
    Ah, ok. Then yes, that's the test I performed to arrive at the FC and CC values. Just didn't realize it was called FAS-DPD.
    I only mentioned it because of your first post stating well above 5 as the water turned orange. The color matching test is the "oto" test. Just wanted to make sure
    18*36*23 true "L" vinyl IG 29,000 gallons. SWG. TF-100 test kit.
    http://tftestkits.net/splash-page.html

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    dmccoyTFP's Avatar
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    Red face Re: Latest Results/Safe To Swim?

    Quote Originally Posted by AimeeH View Post
    I only mentioned it because of your first post stating well above 5 as the water turned orange. The color matching test is the "oto" test. Just wanted to make sure
    Gotcha. Thank you for the clarification!
    David McCoy
    11K gal, IG fiberglass, Hayward self-priming pump, Pentair FNS Plus filter DE filter, Polaris cleaning robot, TF-100 test kit

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