Become a TFP Supporter Pool Math Forum Rules Pool School
Results 1 to 13 of 13

Thread: Raising CYA prior to SLAM

  1. Back To Top    #1

    Join Date
    Jun 2014
    Location
    Aberdeen,MD
    Posts
    39

    Raising CYA prior to SLAM

    I tested my water yesterday after a good few weeks of heavy rains and hot temperatures and sure enough my pool is in need of some attention. Prior to, I was having a difficult time getting my FC to register and stay. I am going to SLAM, but first I am obviously going to raise the CYA. I normally use granular stabilizer, but this time around I've bought the Instant Conditioner from Leslie's. I have two gallons which should raise the CYA to around 60.

    Current levels:
    FC: 0
    CC: 0
    PH: 7.8
    AK: 110
    CH: 280
    CYA: <0.5

    I am going to distribute the conditioner by walking around the pool, but I am wondering when in the process I should start the SLAM. I am going to add the CYA tonight, and hopefully by tomorrow night the pool will be at the correct levels to SLAM. The FC is getting eaten up by the small amount of algae I just noticed today in case you wondering.

    Am I on the right path here?
    10K GAL, AGP Vinyl, Pentair Sand Dollar (SD40) filter, Pentair Dyanamo High Performance Pump (DYNIIN1-1)
    HP 1.50 SPL, Kreepy Krauly Lil Shark Pool Vacuum, Taylor K-2006 Test Kit

  2. Back To Top    #2
    Mod Squad woodyp's Avatar
    Join Date
    Apr 2010
    Location
    East Texas
    Posts
    9,002

    Re: Raising CYA prior to SLAM

    Absolutely no reason to add CYA above level 30 until AFTER your SLAM is complete.
    16x32x52" Steel Cornelius Miramar AGP Vinyl liner 13,100 gal. Buried 2 ft.
    2 Speed Hayward Power-Flo Matrix 85 g.p.m. 22" 250lb. sand filter hard plumbed
    Pool Rover Jr., Pool Blaster Max, Diver Dave TF100 Test Kit/Speed Stir
    Margaritaville Frozen Concoction Maker, Liqour Chiller, & Drink Mixer & Party Tub----Collect 'um all!

  3. Back To Top    #3

    Join Date
    Jun 2014
    Location
    Aberdeen,MD
    Posts
    39

    Re: Raising CYA prior to SLAM

    So you recommend only adding 1 gallon of the conditioner which should raise the CYA to 32PPM?
    10K GAL, AGP Vinyl, Pentair Sand Dollar (SD40) filter, Pentair Dyanamo High Performance Pump (DYNIIN1-1)
    HP 1.50 SPL, Kreepy Krauly Lil Shark Pool Vacuum, Taylor K-2006 Test Kit

  4. Back To Top    #4
    Richard320's Avatar
    Join Date
    Jan 2010
    Location
    San Dimas, CA (LA County)
    Posts
    18,768

    Re: Raising CYA prior to SLAM

    Quote Originally Posted by bmoreXHotPro05 View Post
    So you recommend only adding 1 gallon of the conditioner which should raise the CYA to 32PPM?
    Yes. Do you want to try to maintain 12 FC for a few days, or 24? That's the difference in shock level between the two CYA levels.

    Adding CYA later is easy.
    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!

  5. Back To Top    #5

    In the Industry

    duraleigh's Avatar
    Join Date
    Apr 2007
    Location
    Sebring, Florida
    Posts
    30,084

    Re: Raising CYA prior to SLAM

    Use only one gallon. DO NOT put in 2 gal of conditioner (CYA)
    Dave S.
    42k vinyl and concrete pool, 1.5hp pump, 140gpm filter
    TFTestkits , PoolMath , Pool School

  6. Back To Top    #6

    Join Date
    Jun 2014
    Location
    Aberdeen,MD
    Posts
    39

    Re: Raising CYA prior to SLAM

    I've added just the one gallon and I will re-test tomorrow night. Hopefully by that time the CYA level is adequate for me to shock. Thanks!
    10K GAL, AGP Vinyl, Pentair Sand Dollar (SD40) filter, Pentair Dyanamo High Performance Pump (DYNIIN1-1)
    HP 1.50 SPL, Kreepy Krauly Lil Shark Pool Vacuum, Taylor K-2006 Test Kit

  7. Back To Top    #7
    Richard320's Avatar
    Join Date
    Jan 2010
    Location
    San Dimas, CA (LA County)
    Posts
    18,768

    Re: Raising CYA prior to SLAM

    Quote Originally Posted by bmoreXHotPro05 View Post
    I've added just the one gallon and I will re-test tomorrow night. Hopefully by that time the CYA level is adequate for me to shock. Thanks!
    Why wait? The sun is down. You won't lose any FC to the sun overnight. Hit it!

    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!

  8. Back To Top    #8

    Join Date
    Jun 2014
    Location
    Aberdeen,MD
    Posts
    39

    Re: Raising CYA prior to SLAM

    I was going to ask if I should hit it now with 1 gallon of liquid shock or wait...I will add a gallon now then. Thanks Richard!
    10K GAL, AGP Vinyl, Pentair Sand Dollar (SD40) filter, Pentair Dyanamo High Performance Pump (DYNIIN1-1)
    HP 1.50 SPL, Kreepy Krauly Lil Shark Pool Vacuum, Taylor K-2006 Test Kit

  9. Back To Top    #9

    Join Date
    Jun 2014
    Location
    Aberdeen,MD
    Posts
    39

    Re: Raising CYA prior to SLAM

    Should I shock again in the morning depending on what the FC registers?
    10K GAL, AGP Vinyl, Pentair Sand Dollar (SD40) filter, Pentair Dyanamo High Performance Pump (DYNIIN1-1)
    HP 1.50 SPL, Kreepy Krauly Lil Shark Pool Vacuum, Taylor K-2006 Test Kit

  10. Back To Top    #10
    Richard320's Avatar
    Join Date
    Jan 2010
    Location
    San Dimas, CA (LA County)
    Posts
    18,768

    Re: Raising CYA prior to SLAM

    Quote Originally Posted by bmoreXHotPro05 View Post
    Should I shock again in the morning depending on what the FC registers?
    That is the M in Shock Level And Maintain.

    As often as you can, test and raise FC back to 12. As the SLAM progresses, the amount of bleach consumed in a certain time period should decrease. Obviously, you'll lose more in daylight hours to the sun, and generally after a thorough brushing the demand will spike a bit. But the more often you check and the more consistently you maintain shock level, the faster it will clear.

    This is a battle to the death - an underwater cage match. You knock the algae down and kick it again and again. You can't let it get back up. You must keep kicking it with chlorine until it's dead. The faster those kicks come, the quicker it dies.

    Obviously, you have to work. If you live close enough to dash home at lunch, that would be best, but at least morning, immediately after work, and again at bedtime. If you can get in there between those, do it.
    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!

  11. Back To Top    #11

    Join Date
    Jun 2014
    Location
    Aberdeen,MD
    Posts
    39

    Re: Raising CYA prior to SLAM

    Sounds good. Thanks for the advice!
    10K GAL, AGP Vinyl, Pentair Sand Dollar (SD40) filter, Pentair Dyanamo High Performance Pump (DYNIIN1-1)
    HP 1.50 SPL, Kreepy Krauly Lil Shark Pool Vacuum, Taylor K-2006 Test Kit

  12. Back To Top    #12

    Join Date
    Jun 2014
    Location
    Aberdeen,MD
    Posts
    39

    Re: Raising CYA prior to SLAM

    Checked the water this morning before work. CYA registered 32PPM and the FC was at 4.5. Went ahead and added another 98 oz of liquid chlorine to raise it back up to 12PPM. Will post the results from when I test after work later.
    10K GAL, AGP Vinyl, Pentair Sand Dollar (SD40) filter, Pentair Dyanamo High Performance Pump (DYNIIN1-1)
    HP 1.50 SPL, Kreepy Krauly Lil Shark Pool Vacuum, Taylor K-2006 Test Kit

  13. Back To Top    #13

    Join Date
    Jun 2014
    Location
    Aberdeen,MD
    Posts
    39

    Re: Raising CYA prior to SLAM

    Wanted to thank all who contributed to this post. Since 6/22 when I started the SLAM process, my numbers looks perfect and my pool is crystal clear. CYA is holding at about 32 PPM, and the FC level is holding in between 4.5 - 6.0 PPM. The remaining algae has been vacuumed up and backwashed (still have a few spots on the stairs that I need to get in the pool and clean). This forum has been a godsend and look forward to interacting with everyone more often. Thanks again.

    Update:
    Numbers this afternoon were:
    FC: 6.5
    CC: 0
    PH: 7.8
    AK: 110
    CYA: 60PPM somehow (not sure how it doubled)
    10K GAL, AGP Vinyl, Pentair Sand Dollar (SD40) filter, Pentair Dyanamo High Performance Pump (DYNIIN1-1)
    HP 1.50 SPL, Kreepy Krauly Lil Shark Pool Vacuum, Taylor K-2006 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
  •