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Thread: FC never stays and CYA is 0...HELP!

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    FC never stays and CYA is 0...HELP!

    So, I got the K-2006 Test Kit and I've got the hang of it except for the CYA test....

    1. The solution is never cloudy so it seems like I am wasting my drops. I;ve added an entire container of CYA to the pool last week so I don't know why it isn;t showing up. I even added it in a sock in the the basket as suggested.

    2. The chlorine always falls....probably because my CYA is low. I keep adding bleach but it falls 2 days later to 0. Is this normal?

    Here are my test results.
    Chlorine - 0
    ph - 7.4
    TA-90
    CYA-not even cloudy

    When I plug into Pool Calculator is suggests adding more bleach but I was curious if this is the way its going to be or if something is amiss? Thanks!
    IG Gunnite Pool Size: 25K gallons (20 x 40, 3'6" to 6" depth) with 2 huge Baker Hydro cartridge filters under the skimmer baskets on the suction side, 2 mech timers
    BRAND NEW PLASTER! Quartzscapes/Diamondbrite, Newer Polaris 280, Brand New Hayward Maxflo VS, Brand New Pentair Intelichlor
    I will conquer the black algae this pool season!!!

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    Mod Squad jblizzle's Avatar
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    Re: FC never stays and CYA is 0...HELP!

    First, what does the pool look like? Do you need to shock?

    How much CYA did you add? What was the concentration?

    How much bleach are you adding? Chlorine is consumable and with low CYA, the sun is burning it off quickly. You should be adding bleach everyday ... even if you did have the correct CYA level.

    What are you other levels for completeness? CH, TA, FC and CC? Are you using the FAS-DPD chlorine test (the one with the powder)?
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    Richard320's Avatar
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    Re: FC never stays and CYA is 0...HELP!

    How much is an entire container? A one pound bottle? Four pounds? A 5 gallon plastic bucket full?

    The Pool Calculator indicates that you'll need about 10 lbs of 100% CYA to get it up to 50 ppm.

    Chlorine gets used up every day, even if no one uses the pool. My water is perfectly balanced and crystal clear, and I still need to add about a quart of 12.5% every day.
    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.
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    Isaac-1's Avatar
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    Re: FC never stays and CYA is 0...HELP!

    Also remember powdered CYA takes a week or more to fully show up on the test
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    Re: FC never stays and CYA is 0...HELP!

    I added the whole 4 lbs of this http://www.lesliespool.com/Home/Pool-Ch ... 12302.html
    over the course of 2 days in a sock in the skimmer basket. I waited a week and still nothing.

    Where does everyone else get their CYA?

    Also, pool is very clear. I just added the 363 ounces of Chlorine it said to add. But is this futile if I do not ensure my CYA is up?

    Is there a faster way to get CYA up? I know pool school says it takes a week to register reading for powder form. Is liquid better for my situation?

    Where does everyone get their CYA?
    IG Gunnite Pool Size: 25K gallons (20 x 40, 3'6" to 6" depth) with 2 huge Baker Hydro cartridge filters under the skimmer baskets on the suction side, 2 mech timers
    BRAND NEW PLASTER! Quartzscapes/Diamondbrite, Newer Polaris 280, Brand New Hayward Maxflo VS, Brand New Pentair Intelichlor
    I will conquer the black algae this pool season!!!

  6. Back To Top    #6
    Richard320's Avatar
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    Re: FC never stays and CYA is 0...HELP!

    Quote Originally Posted by mrswhitsie
    I added the whole 4 lbs of this http://www.lesliespool.com/Home/Pool-Ch ... 12302.html
    over the course of 2 days in a sock in the skimmer basket. I waited a week and still nothing.

    Where does everyone else get their CYA?

    Also, pool is very clear. I just added the 363 ounces of Chlorine it said to add. But is this futile if I do not ensure my CYA is up?

    Is there a faster way to get CYA up? I know pool school says it takes a week to register reading for powder form. Is liquid better for my situation?

    Where does everyone get their CYA?
    It's the right stuff, just not enough of it. You maybe brought it up to 20, which is still too low to register on the tester. It's better than none, but you'll need some more. Leslies is a fine source, although you might find it cheaper at Walmart or Lowes. And there's the added advantage that nobody at those stores will be trying to sell you something else, nor will there be much to tempt you on the counter.
    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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