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Thread: Sun and shocking

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    esim13's Avatar
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    Sun and shocking

    Part 1:
    A little background first... Pool started clouding up Thursday. Had 4 swimmers Thursday evening. Left early Friday morning to go RVing. Came home late yesterday, pool still a bit cloudy with a hint of green. Algae is starting! Time to shock. Went to Wally World and loaded up on bleach. Am I fighting a losing battle trying to compete with the sun? I know I need to shock, but should I wait til this evening and hit it hard while the sun is down? Am I wasting bleach starting during full sun?

    Part 2:
    We just recently purchased a RV. We're both teachers so we'll be getting away quite often. What is the best way to handle the pool while we're gone? Up FC before we leave? Use floaters/pucks while gone?

    THANKS!!!
    10,408 gallon, 21' round, 52 in' deep AG, half in ground
    Artesian Clear Master Plus Sand Filter, Artesian Turbo King 2 hp pump, installed June 08
    Denham Springs, Louisiana
    GEAUX TIGERS!
    Pics taken 2012
    http://i941.photobucket.com/albums/ad25 ... CN0606.jpg
    http://i941.photobucket.com/albums/ad25 ... CN0607.jpg

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    Mod Squad jblizzle's Avatar
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    Re: Sun and shocking

    What is your CYA level? If it is over 30ppm, that should help protect the FC from the sun while shocking. Starting in the evening is fine, but you need to maintain the FC over the shock level 24/7.

    If you are only going to be gone for a few days, bumping the FC up to shock level just before you leave may be enough. As the trips get longer, you may need to supplement the shock level with pucks in a floater ... understanding that they will increase your CYA.
    Jason, TFP Moderator
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    Re: Sun and shocking

    Can you post a full set of test results. Most importantly, what is your CYA?

    In short, the chlorine will be used faster in full sun, BUT shocking is typically a multi-day process anyways..so you might as well get started.

    When you are gone, there are a few options. How long are you trips? Pucks are okay..but will add CYA (and you don't want this to get too high). A SWCG would work too, but that is somewhat expensive. Another option is having a neighbor or friend to visit semi-regularly and put in small amounts of bleach. I am not sure what your pools FC consumption is like, so I don't know exactly what that dose would be. Ideally, the water would get tested for FC, and adjusted appropriately. This may not be an option if you are having a neighbor/friend maintain the pool.

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    esim13's Avatar
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    Re: Sun and shocking

    Full set:

    FC 12.5 (I did add 2 big jugs of bleach about 2 hours ago.)
    CC 0
    pH 8.0
    TA 70
    CH 50
    CYA 20 (hit right at the top of the cylinder)
    10,408 gallon, 21' round, 52 in' deep AG, half in ground
    Artesian Clear Master Plus Sand Filter, Artesian Turbo King 2 hp pump, installed June 08
    Denham Springs, Louisiana
    GEAUX TIGERS!
    Pics taken 2012
    http://i941.photobucket.com/albums/ad25 ... CN0606.jpg
    http://i941.photobucket.com/albums/ad25 ... CN0607.jpg

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    Re: Sun and shocking

    You need to lower your pH...

    You can use a floater with trichlor tabs with your CYA at 20.
    Built in 1957 44,000 gallon in-ground, Wet Edge Primera Stone in Sky Blue, Intelliflo VF Pump, 600 lb. Pentair Triton II TR-100 Sand Filter, CircuPool RG 60 Plus SWG, TF-100 test kit
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    esim13's Avatar
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    Re: Sun and shocking

    Why does my pH keep rising? I lowered it to 7.4 Thursday before the swimmers got in.
    10,408 gallon, 21' round, 52 in' deep AG, half in ground
    Artesian Clear Master Plus Sand Filter, Artesian Turbo King 2 hp pump, installed June 08
    Denham Springs, Louisiana
    GEAUX TIGERS!
    Pics taken 2012
    http://i941.photobucket.com/albums/ad25 ... CN0606.jpg
    http://i941.photobucket.com/albums/ad25 ... CN0607.jpg

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    Mod Squad jblizzle's Avatar
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    Re: Sun and shocking

    Splashing raises the pH.

    I would think you would be best served by raising the CYA to at least 30ppm and then starting the shock process (after lowering the pH).
    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: Sun and shocking

    So true! I missed he had algae forming!
    Built in 1957 44,000 gallon in-ground, Wet Edge Primera Stone in Sky Blue, Intelliflo VF Pump, 600 lb. Pentair Triton II TR-100 Sand Filter, CircuPool RG 60 Plus SWG, TF-100 test kit
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    Re: Sun and shocking

    I figured pH was reading a bit high bc of FC. I'll keep at it!
    Thanks!
    10,408 gallon, 21' round, 52 in' deep AG, half in ground
    Artesian Clear Master Plus Sand Filter, Artesian Turbo King 2 hp pump, installed June 08
    Denham Springs, Louisiana
    GEAUX TIGERS!
    Pics taken 2012
    http://i941.photobucket.com/albums/ad25 ... CN0606.jpg
    http://i941.photobucket.com/albums/ad25 ... CN0607.jpg

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    Mod Squad jblizzle's Avatar
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    Re: Sun and shocking

    You are correct that as FC get > than 10ppm, the pH test tends to read a little high. But you are close to 10ppm and are pretty high so the pH could use to go down a bit. You could let the FC drift below 10ppm and check pH again.
    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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  11. Back To Top    #11
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    Re: Sun and shocking

    Pool is coming along fine.. maintaining shock level is right on. While I'm waiting for my next check I started wondering about my pH to TA ratios. I know I lowered pH before the swimmers got in the other day. I know splashing and such raises pH but here's the thing... no one was splashing. The swimmers were mid 30 women floating on noodles. Not much excitement going on, just chating as women do. Yesterday when FC dropped to 10 I retested pH before bumping back up to shock level. pH was still at 8.0. I fight the pH battle regularly. Is this normal? Will raising my TA help with maintaining a steady pH level? TA is currently at 70.
    Thanks!
    10,408 gallon, 21' round, 52 in' deep AG, half in ground
    Artesian Clear Master Plus Sand Filter, Artesian Turbo King 2 hp pump, installed June 08
    Denham Springs, Louisiana
    GEAUX TIGERS!
    Pics taken 2012
    http://i941.photobucket.com/albums/ad25 ... CN0606.jpg
    http://i941.photobucket.com/albums/ad25 ... CN0607.jpg

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    Re: Sun and shocking

    My high end FC says 14. Would it hurt anything if I bumped it to 20 for the night? I'm going out of town for the night Friday so I'm hoping to stay ahead a bit til I get back Saturday.

    Thanks!
    10,408 gallon, 21' round, 52 in' deep AG, half in ground
    Artesian Clear Master Plus Sand Filter, Artesian Turbo King 2 hp pump, installed June 08
    Denham Springs, Louisiana
    GEAUX TIGERS!
    Pics taken 2012
    http://i941.photobucket.com/albums/ad25 ... CN0606.jpg
    http://i941.photobucket.com/albums/ad25 ... CN0607.jpg

  13. Back To Top    #13
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    Re: Sun and shocking

    What do you mean "high end"? What is your CYA?
    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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  14. Back To Top    #14
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    Re: Sun and shocking

    When I checked yesterday it was 20. I'm using Pool Calc app on iphone. High shock says 14.
    10,408 gallon, 21' round, 52 in' deep AG, half in ground
    Artesian Clear Master Plus Sand Filter, Artesian Turbo King 2 hp pump, installed June 08
    Denham Springs, Louisiana
    GEAUX TIGERS!
    Pics taken 2012
    http://i941.photobucket.com/albums/ad25 ... CN0606.jpg
    http://i941.photobucket.com/albums/ad25 ... CN0607.jpg

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    Mod Squad jblizzle's Avatar
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    Re: Sun and shocking

    Oh ... ok. Shows as mustard shock level on poolcalculator online.

    Well, 20ppm may be a little high although may be fine for a 1 time occurrence. The biggest danger is fading your liner, although not probable for a single short high FC level.

    I am not sure what is a "safe" level honestly.
    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
    Pool School + Test Kit + PoolMath = A TROUBLE FREE POOL
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    esim13's Avatar
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    Re: Sun and shocking

    Ok, I'm thinking the same thing. I have it at 14 now so I'll wait and see if anyone else pops in before bed. If not I'll leave it for the night.

    THANKS!
    10,408 gallon, 21' round, 52 in' deep AG, half in ground
    Artesian Clear Master Plus Sand Filter, Artesian Turbo King 2 hp pump, installed June 08
    Denham Springs, Louisiana
    GEAUX TIGERS!
    Pics taken 2012
    http://i941.photobucket.com/albums/ad25 ... CN0606.jpg
    http://i941.photobucket.com/albums/ad25 ... CN0607.jpg

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    Re: Sun and shocking

    We're almost there...




    10,408 gallon, 21' round, 52 in' deep AG, half in ground
    Artesian Clear Master Plus Sand Filter, Artesian Turbo King 2 hp pump, installed June 08
    Denham Springs, Louisiana
    GEAUX TIGERS!
    Pics taken 2012
    http://i941.photobucket.com/albums/ad25 ... CN0606.jpg
    http://i941.photobucket.com/albums/ad25 ... CN0607.jpg

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    Re: Sun and shocking

    Quote Originally Posted by esim13
    We're almost there...
    Yes, you are!

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    esim13's Avatar
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    Re: Sun and shocking

    I'm about to leave for an overnight trip and hate to lose momentum. I have no one around to add bleach. Any suggestions? Should I up it before I head out and hope for the best when I return tomorrow evening?
    10,408 gallon, 21' round, 52 in' deep AG, half in ground
    Artesian Clear Master Plus Sand Filter, Artesian Turbo King 2 hp pump, installed June 08
    Denham Springs, Louisiana
    GEAUX TIGERS!
    Pics taken 2012
    http://i941.photobucket.com/albums/ad25 ... CN0606.jpg
    http://i941.photobucket.com/albums/ad25 ... CN0607.jpg

  20. Back To Top    #20
    esim13's Avatar
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    Re: Sun and shocking

    One more question.. If my pump is running at 11.5 then I backwash around 14?
    10,408 gallon, 21' round, 52 in' deep AG, half in ground
    Artesian Clear Master Plus Sand Filter, Artesian Turbo King 2 hp pump, installed June 08
    Denham Springs, Louisiana
    GEAUX TIGERS!
    Pics taken 2012
    http://i941.photobucket.com/albums/ad25 ... CN0606.jpg
    http://i941.photobucket.com/albums/ad25 ... CN0607.jpg

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