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Thread: Recommended Chemical Levels

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    Srbinette's Avatar
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    Recommended Chemical Levels

    I am currently waiting on my FAS DPD to be delivered. In the mean time I have decided to get my water tested at the local pool store (assuming it must be better than the strips that I have). My test results were as folows:
    CYA: 0
    Total Chlorine 9.2
    Free Chlorine 8.2
    PH 7.7
    Total Alkalinity 98
    Adjusted Alkalinity 98
    Total Hardness 74
    I had a small amount of iron (0.3) and copper (0.1) but the store owner said that it was so little and not to worry about it. He recommended that I increase my Alkalinity and hardness, decrease my pH, add stabalizer and algecide, and continue shocking my pool until it is clear.
    Thoughts?
    IMG_20150609_134704.jpg
    Hayward S180T #150 Sand Filter
    1hp Hayward Super Pump.
    19,200 gallon vinyl inground pool.
    Dolphin Nautilus Pool Cleaning Robot

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    Re: Recommended Chemical Levels

    Pool Store's advice is not too far off what we would suggest but the test results we would really like confirmed with your testing. Do you know when your kit will be in? Your Pool will clear very nicely.....it's not too bad.

    We will probably suggest leaving everything alone except for CYA but let's see what your tests yield.
    Dave S.
    42k vinyl and concrete pool, 1.5hp pump, 140gpm filter
    TFTestkits , PoolMath , Pool School

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    Mod Squad jblizzle's Avatar
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    Re: Recommended Chemical Levels

    Wait for your test kit.

    Nothing in those numbers points to a dire need to do anything.
    The TA is fine, BTW, if not a little high.
    Forget the algaecide.
    You likely need stabilizer as hopefully they could at least get a 0 value correct.
    Jason, TFP Moderator
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    Srbinette's Avatar
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    Re: Recommended Chemical Levels

    The test kit should be in by Friday, or Tuesday the latest. I added some CYA. Pumps been running 24/7 since I changed the sand last Thursday. We just bought this house and the previous owner was not available to go over the pool with us. But we are learning. This is what we started with two weeks ago:
    image.jpg
    Took out several garbage bags full of leaves and pine needles with a pool rake. My friend brought over his bot to pick up the rest. It's been project.
    Hayward S180T #150 Sand Filter
    1hp Hayward Super Pump.
    19,200 gallon vinyl inground pool.
    Dolphin Nautilus Pool Cleaning Robot

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    Divin Dave's Avatar
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    Re: Recommended Chemical Levels

    Hi,
    all you need is the proper dose of chlorine and maintain that chlorine level until the pool is clear. You dont need any algaecide for a couple of reaons.
    1. It doesnt kill algae
    2. Most algaecides contain copper, and copper can leave stains on the pool surface and turn blonde hair green.
    Chlorine is as good as algaecide as there is. Keep your chlorine level properly, and you will never have algae again.

    you need a good test kit in order do know what the fC (and other), levels are so that you know how much chlorine to add in order to clear the pool.
    Its a sad truth that pool store testing is notoriously inaccurate.

    for a 19K gallon pool, it wouldnt hurt anything if you were to add about 3/4 gallon of regular (no fancy scents or splashless) concentrated bleach to the pool while you are waiting for the test kit to arrive. It wont make things any better, but may help in preventing it from getting any worse for a few days.
    Divin Dave,
    IG Vinyl, 15' x 30', 3 1/2' - 6' deep, Oval, ~15K gal, Intelliclor IC40, Intelliflo VS pump, Clean and Clear 420 Filter, auto-fill-disabled, Retrofit LED Color Light, Dolphin Nautilus Robot, TF100 Test Kit, Taylor K1766 Salt Test Kit, Tftestkit Pressure Gauge.
    www.tftestkits.net Experience- it's what's learned just after you needed it most !!

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    Richard320's Avatar
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    Re: Recommended Chemical Levels

    Wow, that's some improvement for working blind without a test kit right there next to you!
    16K freeform gunite with spa; Pentair 4000 DE filter; Century Whisperflow 1 HP; Pentair Minimax heater.
    Troublefree does not mean Maintenancefree. It's like brushing your teeth: You can spend a couple minutes a day and pennies a week or go to the dentist once a year and spend several thousand dollars.
    A pool is like a pet - you have to feed it every day, even the days you don't want to play with it!

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    Srbinette's Avatar
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    Re: Recommended Chemical Levels

    Ok so my test kit came in. Using Taylor K-2006
    FC 13.75
    CC .5
    PH 7.4
    Alkalinity 120
    Calcium 120
    CYA 80
    Hayward S180T #150 Sand Filter
    1hp Hayward Super Pump.
    19,200 gallon vinyl inground pool.
    Dolphin Nautilus Pool Cleaning Robot

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    Mod Squad jblizzle's Avatar
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    Re: Recommended Chemical Levels

    Your FC level does not make sense. If you used 10ml of water, then it is a multiple of 0.5ppm

    That CYA is pretty high and life would be easier if you replaced half the water.
    Jason, TFP Moderator
    18k IG pebblesheen pool, Hayward ProLogic P4 w/ T-15 SWG, Pentair 1HP 2-speed Superflo, Hayward 6020 DE filter
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    Re: Recommended Chemical Levels

    Sorry that was actually 13.5, I got 13.4 the second time when I used 25ml
    Hayward S180T #150 Sand Filter
    1hp Hayward Super Pump.
    19,200 gallon vinyl inground pool.
    Dolphin Nautilus Pool Cleaning Robot

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    Mod Squad tim5055's Avatar
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    Re: Recommended Chemical Levels

    As Jason points out, the CYA is very high. It's going to take a lot of Florine to clear that up with CYA that high. Draining 50% to get the CYA to 40 would be good.
    TFP Moderator 39 X 18 23,000(ish) freeform gunite; built 2007ish; Pentair Triton II TR100 600lb Sand filter; 2 HP Pentair pump with 2.2 HP AO Smith single speed motor; 2 skimmers, 1 main drain, 4 returns w/waterfall, Stenner 45MHP2 3GPD running@ 60% - 15 gal Tank; heated by the sun CYA 200+ when I started - 50 now. Dolphin Supreme M5 Pool Cleaner. Hot Springs SX Spa, 285 gallon

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    Re: Recommended Chemical Levels

    As for cya, I keep getting different readings. 80 then 40... I think I need practice.

    - - - Updated - - -

    Ok so I've gotten 40 twice. I'm going to say I probably screwed up on my first test. 40 makes more sense because over half of my pool is straight from the tap. And I put stabilizer in but had to backwash the same day so most likely lost some chemicals, which was probably a good thing.

    So so should I just wait for my filter to catch up? Sounds like my chemicals might be okay?
    Hayward S180T #150 Sand Filter
    1hp Hayward Super Pump.
    19,200 gallon vinyl inground pool.
    Dolphin Nautilus Pool Cleaning Robot

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    Re: Recommended Chemical Levels

    Also, my Dolphin Nautilus just came in, would the high chlorine level ruin it?
    Hayward S180T #150 Sand Filter
    1hp Hayward Super Pump.
    19,200 gallon vinyl inground pool.
    Dolphin Nautilus Pool Cleaning Robot

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    Re: Recommended Chemical Levels

    Update. We can see bottom!
    image.jpg
    Hayward S180T #150 Sand Filter
    1hp Hayward Super Pump.
    19,200 gallon vinyl inground pool.
    Dolphin Nautilus Pool Cleaning Robot

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    Mod Squad jblizzle's Avatar
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    Re: Recommended Chemical Levels

    How is your FC behaving?
    You might consider Deep Cleaning your Sand Filter to be sure the cloudiness is being captured.
    After that, you may consider Adding DE to your Sand Filter to help remove the cloudiness.
    Jason, TFP Moderator
    18k IG pebblesheen pool, Hayward ProLogic P4 w/ T-15 SWG, Pentair 1HP 2-speed Superflo, Hayward 6020 DE filter
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    Srbinette's Avatar
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    Re: Recommended Chemical Levels

    I changed my sand a week and a half ago and have been adding DE after every backwash. my FC has stayed very high. It was at 15ppm this afternoon and I haven't added chlorine in 5 days. My combined chlorine is <.5.
    Hayward S180T #150 Sand Filter
    1hp Hayward Super Pump.
    19,200 gallon vinyl inground pool.
    Dolphin Nautilus Pool Cleaning Robot

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    Mod Squad jblizzle's Avatar
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    Re: Recommended Chemical Levels

    Alright, so the filter should be fine.
    How are the FC and CC levels tracking?
    Jason, TFP Moderator
    18k IG pebblesheen pool, Hayward ProLogic P4 w/ T-15 SWG, Pentair 1HP 2-speed Superflo, Hayward 6020 DE filter
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    Srbinette's Avatar
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    Re: Recommended Chemical Levels

    CC is usually .5 or less for the last week. I've been keeping the pool at shock level for the most part. I didn't check it for a couple days. Was not home. Level dropped to 15ppm from 20ppm but we had full sun for three days. I shocked it again tonight and it should be at around 22ppm when everything circulates. My plan is to keep shocking until it is clear.

    - - - Updated - - -

    I have no where to be for the next week so plenty of time to babysit the pool until it sparkles.

    - - - Updated - - -

    I thought about putting in my pool robot (dolphin nautilus) to help the filter out, but I'm concerned about the high chlorine levels. What do you think?
    Hayward S180T #150 Sand Filter
    1hp Hayward Super Pump.
    19,200 gallon vinyl inground pool.
    Dolphin Nautilus Pool Cleaning Robot

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    Mod Squad jblizzle's Avatar
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    Re: Recommended Chemical Levels

    At shock level the active chlorine level is about 10 times more harsh than maintenance levels. So having the cleaner in for 1 day would do the equivalent damage of the cleaner being the pool 10 days at normal levels.

    BTW, even at shock level, the active chlorine level is likely less than you would encounter in a public pool with no CYA in it.
    Jason, TFP Moderator
    18k IG pebblesheen pool, Hayward ProLogic P4 w/ T-15 SWG, Pentair 1HP 2-speed Superflo, Hayward 6020 DE filter
    500 sqft Heliocol solar panels, ThePoolCleaner, TF-100 test kit w/ SpeedStir
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    Srbinette's Avatar
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    Re: Recommended Chemical Levels

    Thanks for your help!
    Hayward S180T #150 Sand Filter
    1hp Hayward Super Pump.
    19,200 gallon vinyl inground pool.
    Dolphin Nautilus Pool Cleaning Robot

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