Become a TFP Supporter Pool Math Forum Rules Pool School
Results 1 to 8 of 8

Thread: high bather load

  1. Back To Top    #1

    Join Date
    May 2010
    Location
    CT.
    Posts
    72

    high bather load

    Water looks great with good chemistry. I am expecting a large load of bathers 10-15 HS kids later this week. Should I Bump FC up prior to the event? Currently keeping it at 5 based on my cya level of 60.

    any other suggestions?
    16,000 gallon outdoor in-ground 16'x32' Kidney painted concrete pool; Hayward super pump, Hayward pro Grid 3620 DE filter(using Fiber Clear). No Heater. 250 gallon stand alone Jacuzzi hot tub .

  2. Back To Top    #2

    Join Date
    Feb 2008
    Location
    Flower Mound, TX
    Posts
    5,062

    Re: high bather load

    5 is your minimum. This means that at 4.9 essentially, you are unprotected. For a CYA of 60, your FC target should be 7 for day to day operations. For a high bather load, I would bring it to about 8 or 8.5, one hour prior to the party.
    10K gallon IG gunite with waterfall; Pentair CC320P filter; WhisperFlo 2 HP pump
    TF Test Kits - Pool Math - Pool School
    "It depends."- JohnT

  3. Back To Top    #3
    JasonLion's Avatar
    Join Date
    May 2007
    Location
    Silver Spring, MD
    Posts
    37,887

    Re: high bather load

    As 257WbyMag said, bump to around 8 to 9 right before the party and then check the FC level as soon as practical after the party and raise it a bit above the minimum then as well.
    19K gal, vinyl, 1/2 HP WhisperFlo pump, 200 sqft cartridge filter, AutoPilot Digital SWG, Dolphin Dynamic cleaning robot
    Creator of PoolMath and Pool Calculator. Other handy links: Support this site, TF Test Kits, Pool School

  4. Back To Top    #4

    Join Date
    May 2010
    Location
    CT.
    Posts
    72

    Re: high bather load

    Thanks will bump it up prior to the party.

    I am using 5 as the FC number as the pool calc is saying Goal: 4 to 8 ? 5 seems to be working? I will go to 6 to see what happens!
    16,000 gallon outdoor in-ground 16'x32' Kidney painted concrete pool; Hayward super pump, Hayward pro Grid 3620 DE filter(using Fiber Clear). No Heater. 250 gallon stand alone Jacuzzi hot tub .

  5. Back To Top    #5
    JasonLion's Avatar
    Join Date
    May 2007
    Location
    Silver Spring, MD
    Posts
    37,887

    Re: high bather load

    With CYA at 60, the recommended level is either 5 to 7, or 5 to 9, depending on which source you are looking at. CYA at 50 is 4 to 8.
    19K gal, vinyl, 1/2 HP WhisperFlo pump, 200 sqft cartridge filter, AutoPilot Digital SWG, Dolphin Dynamic cleaning robot
    Creator of PoolMath and Pool Calculator. Other handy links: Support this site, TF Test Kits, Pool School

  6. Back To Top    #6

    Join Date
    May 2010
    Location
    CT.
    Posts
    72

    Re: high bather load

    my bad CYA is 50!!!

    Al I do know is that I am going thru lots of CL.. Dropping to around 2.5-3 each check then adding to bump up!

    I was questioning in an earlier post on cost... Might be cheaper for me to do Cal Hypo.. My CH is 220

    60.00 for a 25lb 48%
    16,000 gallon outdoor in-ground 16'x32' Kidney painted concrete pool; Hayward super pump, Hayward pro Grid 3620 DE filter(using Fiber Clear). No Heater. 250 gallon stand alone Jacuzzi hot tub .

  7. Back To Top    #7
    JasonLion's Avatar
    Join Date
    May 2007
    Location
    Silver Spring, MD
    Posts
    37,887

    Re: high bather load

    Most of the time the best available price on cal-hypo is more than the best available price on bleach, for the same amount of chlorine added. But sometimes there is a big sale on cal-hypo, or you can't find a good price on bleach, and it goes the other way. That isn't an especially good price for cal-hypo, so I suspect that bleach is less expensive for you, at least if you hunt around for a good price. 25 lbs of 48% is equal to about 16 large (182 oz) jugs of 6% bleach, at $60 gives a break even price of $3.75 per jug of bleach. There are several people on the forum who are finding bleach for around $2.20 for a 182 oz of 6%.

    With CYA at 50, I would expect you to lose about half of your FC each sunny day. That will vary somewhat from pool to pool, but something in that area.
    19K gal, vinyl, 1/2 HP WhisperFlo pump, 200 sqft cartridge filter, AutoPilot Digital SWG, Dolphin Dynamic cleaning robot
    Creator of PoolMath and Pool Calculator. Other handy links: Support this site, TF Test Kits, Pool School

  8. Back To Top    #8

    Join Date
    May 2010
    Location
    CT.
    Posts
    72

    Re: high bather load

    Great, I am loosing just about that!! Has been warm and Sunny here since opening!
    16,000 gallon outdoor in-ground 16'x32' Kidney painted concrete pool; Hayward super pump, Hayward pro Grid 3620 DE filter(using Fiber Clear). No Heater. 250 gallon stand alone Jacuzzi hot tub .

Posting Permissions

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