Become a TFP Supporter Pool Math Forum Rules Pool School
Results 1 to 6 of 6

Thread: How are my numbers?

  1. Back To Top    #1
    lovemy3azboys's Avatar
    Join Date
    Mar 2011
    Location
    Phoenix, Arizona
    Posts
    63

    How are my numbers?

    We had some trouble getting our FC & CYA numbers up in the beginning due to misunderstanding about SWG. Pools been up about 8 days now. Had our FC at 5 & CYA at 50 since this weekend. Still working on our TA & PH. Had removed our skimmer for a day or two but have put it back. Noticed a brown rim, that I believed was because the skimmer wasnt pulling the gunk from the surface. I brushed the gunk off the rim yesterday but today the water looks a little cloudy but am not certain. Take a look at my numders & tell me what you think.

    FC 5, should this be higher?
    CC 0
    TC 5
    PH 7.8 - 8.2, I plan to add MA tonight & hope to get down to 7.2 by tomorrow
    TA 220 last weekend, trying to bring it down slowly with MA
    CH 480 last weekend
    CYA 50, should I bump this to 70?
    It's nearly 100 degrees here soon
    25,000 gallon plaster dive pool, Eclipse sand filter, 1 HP Centurion pump, Baracuda G3, TF-100 Test Kit

  2. Back To Top    #2
    Butterfly's Avatar
    Join Date
    May 2007
    Location
    South Carolina
    Posts
    10,045

    Re: How are my numbers?

    Yep, as you said, lower your pH first.

    FC 5 is fine; however, I suggest you do an overnight FC loss test to determine if the clouding is algae and if you need to shock (or not). If you don't pass the test, it would be easier and cheaper to shock the pool (w/bleach/liquid chlorine) before you raise your CYA level.
    TFP Moderator TF100 Test Kit TF100 TestKit YouTube Channel PoolMath
    You're done SLAMing when:
    1)You lose 1ppm or less FC overnight, & 2)You have .5ppm CC's or less, & 3)your water is clear.

    ~ One should not use a sledge hammer to swat a mosquito. ~

    If you found TFP helpful and we saved you money ... Become a TFP Supporter!

  3. Back To Top    #3

    Re: How are my numbers?

    The cloudiness is probably, at least partly, due to the high pH, TA and Calcium levels. You should maintain the pH at about 7.2 to 7.4 until your TA gets down to about 70 ppm.

  4. Back To Top    #4
    lovemy3azboys's Avatar
    Join Date
    Mar 2011
    Location
    Phoenix, Arizona
    Posts
    63

    Re: How are my numbers?

    Overnight FC loss test shows a loss of 1ppm. As of 5:30 am my FC was at 4ppm. Here are my additional questions.

    What level do I want to shock to with a CYA only at 50? I couldnt find this on Pool School

    With the above recommended level of shock how long is a reasonable amount of time before swimming?

    This is my kids 1st day of summer vacation with his 1st pool & with a friend coming over this afternoon. Should/can I add just enough chlorine to bring the FC to 5-6 then shock tonight & going forward until the water is clear & FC loss test is good?

    Thanks in advance.
    25,000 gallon plaster dive pool, Eclipse sand filter, 1 HP Centurion pump, Baracuda G3, TF-100 Test Kit

  5. Back To Top    #5
    Butterfly's Avatar
    Join Date
    May 2007
    Location
    South Carolina
    Posts
    10,045

    Re: How are my numbers?

    Shock level is 20 for a CYA of 50. See the CYA/Chlorine Chart in Pool School. Also link in my sig.
    TFP Moderator TF100 Test Kit TF100 TestKit YouTube Channel PoolMath
    You're done SLAMing when:
    1)You lose 1ppm or less FC overnight, & 2)You have .5ppm CC's or less, & 3)your water is clear.

    ~ One should not use a sledge hammer to swat a mosquito. ~

    If you found TFP helpful and we saved you money ... Become a TFP Supporter!

  6. Back To Top    #6
    lovemy3azboys's Avatar
    Join Date
    Mar 2011
    Location
    Phoenix, Arizona
    Posts
    63

    Re: How are my numbers?

    Quote Originally Posted by Butterfly
    Shock level is 20 for a CYA of 50. See the CYA/Chlorine Chart in Pool School. Also link in my sig.
    I did see the chlorine level for CYA of 50 but wasnt sure to use that because we do have a SWG. Thanks for the info for shock level of 20.

    You had mentioned in your first reply to take care of the high ph first. Does the high PH affect the Overnight PH Loss Test?

    Last night I added MA & brought the PH down to about 7.2. Should I still shock soon?
    25,000 gallon plaster dive pool, Eclipse sand filter, 1 HP Centurion pump, Baracuda G3, TF-100 Test Kit

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •