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Thread: Filling the pool on Friday

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    Post Filling the pool on Friday

    Hi Everyone,


    I've been lurking the forums here for a few weeks now and have been very impressed with both the knowledge of the members and the friendliness everyone has towards one another. Kudos! Not to mention, after seeing some before and after "swamp" pictures posted by various pool owners, I'm certainly a believer in the TFP community and methods!


    So, here's my story...


    I bought a new home last October and it came with a pool. It was certainly one of the selling points, but now I'm cramming as much information about pool maintenance that I can. The pool is currently only half full and was closed by the previous owner. After the bad winter we had here in Ohio, I must have lost some water to "heavy cover displacement". So, as I began to unearth the pool, I noticed that the skimmer box and return port were all caked with clear caulking. The skimmer wasn't even sealed very well between the inside and outside of the pool walls. When I attempted to tighten it, it had no bite left. I ended up replacing both parts with all new rubber gaskets and fillings. I also hooked up the pump and filter to get the water moving (with hosed dipped in the pool since it's below the skim line) and get an initial test reading. There is little to no debris in the pool thankfully. Here are the test results (K-2006).

    CYA 70 (previous owner used tablets)
    pH 7.6
    FC 0
    CC 0
    TC 0
    TA 120
    Ch 140

    So with the CYA being on the high side, is it safe to assume that CYA will be proportional when the new water is added? So for example, my pool is currently at half capacity and reading 70 CYA. When it is filled on Friday, will this dilute the CYA proportionally to 35? I plan to test again after it is filled and circulated for a bit, but I was simply curious.

    Also, can/should I do anything at the moment to begin the SLAM process with the 10.5k gallons already in the pool? I think the CYA may limit my success, but I will ask the experts here. The water is currently slightly cloudy to mostly clear. I have 8 gallons of 12.5% bleach ready to go!

    Let me know your thoughts and any other things I may have overlooked. I appreciate your time and assistance!
    Jeremy
    30ft round, 21k gallon AG Vinyl Pool, Doughboy Powerline XP I Series 1Hp single-speed Pump (0-3296-203), Doughboy Silica II Sand Filter (0-1750-000)
    Taylor K-2006 Test Kit with SpeedStir

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    Re: Filling the pool on Friday

    *UPDATE* - Just got a call from the water delivery company. They had a cancellation and will now be delivering sometime tomorrow.
    Jeremy
    30ft round, 21k gallon AG Vinyl Pool, Doughboy Powerline XP I Series 1Hp single-speed Pump (0-3296-203), Doughboy Silica II Sand Filter (0-1750-000)
    Taylor K-2006 Test Kit with SpeedStir

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    Texas Splash's Avatar
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    Re: Filling the pool on Friday

    No doubt you need and should add some bleach in there right away since your FC is at 0. But understand there's no guarantee that your CYA will diminish exactly in half to 35% following the fill. CYA doesn't always change evenly on a water exchange like that. So you might be advised to wait until you have an "accurate" CYA after the fill before implementing the SLAM. As you may already know, the FC and CYA are absolutely critical to know to have an effective SLAM. Good luck Jeremy, and I'm sure others will post on this thread as well.
    Pat (a.k.a. Texas Splash) ~ My Pool: Viking Fiberglass; 17,888 Gal; Waterway Supreme 2-sp/2-hp pump; Hayward Ctg filter; TF-100 w/ Speed Stir
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    Re: Filling the pool on Friday

    Here's the pool this morning. I added about a half gallon of 12.5% bleach yesterday just to get something in there. Once the water is in the pool and circulated for a while, I'll retest the CYA.
    Anything else? Should I put in another half gallon of bleach after the water is delivered?

    Attached Images Attached Images
    Jeremy
    30ft round, 21k gallon AG Vinyl Pool, Doughboy Powerline XP I Series 1Hp single-speed Pump (0-3296-203), Doughboy Silica II Sand Filter (0-1750-000)
    Taylor K-2006 Test Kit with SpeedStir

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    DaninFLA's Avatar
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    Re: Filling the pool on Friday

    EDIT: Pool math says the 1/2 gallon of 12.5% bleach will raise your FC by 6ppm (assuming pool is half full). with a CYA of 70, your target FC is 8ppm, and minimum is 5ppm, so you are good.

    keep your current pool volume at the target FC and above the minimum. when you add water, both the CYA and FC is going to be diluted by 2 roughly so you are good.
    Dan
    9,000 gallon in-ground Saltwater pool, plaster, cartridge filer, 1.0 hp pump, Hayward T-15 SWCG, TF-100
    Pool School - Chlorine / CYA Chart; Pool School - Test Kits Compared;

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    Richard320's Avatar
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    Re: Filling the pool on Friday

    It looks full. Why are you adding more?

    Just get the water circulating and check for leaks on all your repairs. Make a lap around the pool with the brush. Let the pump run half an hour minimum. Then test CYA and add what you need to target bleach-wise. I'd question whether a SLAM is even necessary with water that clear. Do the walls feel slick or is there something growing in the water we can't see in the pictures?
    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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    Re: Filling the pool on Friday

    Thanks for the confirmation!
    Jeremy
    30ft round, 21k gallon AG Vinyl Pool, Doughboy Powerline XP I Series 1Hp single-speed Pump (0-3296-203), Doughboy Silica II Sand Filter (0-1750-000)
    Taylor K-2006 Test Kit with SpeedStir

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    Re: Filling the pool on Friday

    It probably is a bit unnoticeable, but the water line is about 20 inches below the midpoint of the skimmer. The walls don't feel slimy and there isn't any noticeably growing.

    Quote Originally Posted by Richard320 View Post
    It looks full. Why are you adding more?

    Just get the water circulating and check for leaks on all your repairs. Make a lap around the pool with the brush. Let the pump run half an hour minimum. Then test CYA and add what you need to target bleach-wise. I'd question whether a SLAM is even necessary with water that clear. Do the walls feel slick or is there something growing in the water we can't see in the pictures?
    Jeremy
    30ft round, 21k gallon AG Vinyl Pool, Doughboy Powerline XP I Series 1Hp single-speed Pump (0-3296-203), Doughboy Silica II Sand Filter (0-1750-000)
    Taylor K-2006 Test Kit with SpeedStir

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    DaninFLA's Avatar
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    Re: Filling the pool on Friday

    Quote Originally Posted by chavez35 View Post
    It probably is a bit unnoticeable, but the water line is about 20 inches below the midpoint of the skimmer. The walls don't feel slimy and there isn't any noticeably growing.
    maybe you wont have to SLAM then, but you still need to keep FC above the minimum for your current CYA.

    once you get it filled, raise the FC up and do a OCLT. that will tell you if you need to SLAM
    Dan
    9,000 gallon in-ground Saltwater pool, plaster, cartridge filer, 1.0 hp pump, Hayward T-15 SWCG, TF-100
    Pool School - Chlorine / CYA Chart; Pool School - Test Kits Compared;

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    Re: Filling the pool on Friday

    Quote Originally Posted by DaninFLA View Post
    maybe you wont have to SLAM then, but you still need to keep FC above the minimum for your current CYA.

    once you get it filled, raise the FC up and do a OCLT. that will tell you if you need to SLAM
    Makes sense, thank you.
    Jeremy
    30ft round, 21k gallon AG Vinyl Pool, Doughboy Powerline XP I Series 1Hp single-speed Pump (0-3296-203), Doughboy Silica II Sand Filter (0-1750-000)
    Taylor K-2006 Test Kit with SpeedStir

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    Re: Filling the pool on Friday

    CYA test was below 30 after the new water was introduced. When I filled the entire tube to the top, the black dot disappeared (<30). So I added 1lb of cyanuric acid in a sock and dissolved it in front of the return around 6pm yesterday. I'll check CYA again next week. I'm targeting a CYA between 30-40, FC between 4-5.

    Performing the OCLT...

    Readings at 10pm yesterday:
    FC=4.4
    CC=0.2
    pH=7.7
    TA=150
    Clarity=A bit cloudy

    Readings at 6am this morning:
    FC=4.2
    CC=0.2
    pH=7.7
    TA=150
    Clarity=Clearer

    I seem to pass the OCLT test except for maybe clarity although it is pretty clear. There is some silty residue that has collected in spots on the bottom. I probably need to vacuum today as this may be prohibiting the water becoming crystal clear.

    Skipped the CH test since its been holding around 120 in past attempts. I'm going to add about 6.5oz of bleach to get the FC up to about 4.5 today.

    Should I worry too much about the TA or is this in the normal range? The recommended level is 70-90+, I'm guessing that the 90+ means anything higher than 90?
    Jeremy
    30ft round, 21k gallon AG Vinyl Pool, Doughboy Powerline XP I Series 1Hp single-speed Pump (0-3296-203), Doughboy Silica II Sand Filter (0-1750-000)
    Taylor K-2006 Test Kit with SpeedStir

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    Re: Filling the pool on Friday

    Just keep up with what you're doing and leave the pump run. That residual cloudiness will clear up in a few days. I'd say you're off to a fine start! If your CYA is still indeed below or at thirty you'll want to start creeping it up to around 50. Put the CYA granules in a sock or panty hose and hang in skimmer or in front of return. Then give it a squeeze now and again to speed it along. Just make sure you keep your FC in range. The sun will eat FC and organic debris will eat FC.
    ~19k Gal, IG Vinyl, Hayward SP2607X10 1hp pump, Hayward S200 Sand Filter, built in 70s, has 8 deep end with diving board, 1 skimmer, 1 return, 1 low hole, Polaris booster pump PB4-60, old Polaris robot not sure model, Rheem P-M266A-EN-C 266,000 BTU heater, solar cover, Taylor K-2006 test kit, Speedstir

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    DaninFLA's Avatar
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    Re: Filling the pool on Friday

    Quote Originally Posted by chavez35 View Post
    CYA test was below 30 after the new water was introduced. When I filled the entire tube to the top, the black dot disappeared (<30). So I added 1lb of cyanuric acid in a sock and dissolved it in front of the return around 6pm yesterday. I'll check CYA again next week. I'm targeting a CYA between 30-40, FC between 4-5.

    Performing the OCLT...

    Readings at 10pm yesterday:
    FC=4.4
    CC=0.2
    pH=7.7
    TA=150
    Clarity=A bit cloudy

    Readings at 6am this morning:
    FC=4.2
    CC=0.2
    pH=7.7
    TA=150
    Clarity=Clearer

    I seem to pass the OCLT test except for maybe clarity although it is pretty clear. There is some silty residue that has collected in spots on the bottom. I probably need to vacuum today as this may be prohibiting the water becoming crystal clear.

    Skipped the CH test since its been holding around 120 in past attempts. I'm going to add about 6.5oz of bleach to get the FC up to about 4.5 today.

    Should I worry too much about the TA or is this in the normal range? The recommended level is 70-90+, I'm guessing that the 90+ means anything higher than 90?
    i wouldn't worry too much about TA with your CH so low. the higher TA will keep your pH higher. if you want to lower it, keep adding muriatic acid to push the pH down to low 7s, then aim your return jets at the surface to aerate the water. this will raise you pH back up. then repeat the cycle. this will lower your TA. I recently lowered my TA from 120 to 80 using this method, but I did it because my CH was high and was worried about leaching. not really a concern with your numbers

    And congrats, great news you wont have to worry about a SLAM! just keep your FC near the target number and enjoy a low maintenance, algae free pool!
    Dan
    9,000 gallon in-ground Saltwater pool, plaster, cartridge filer, 1.0 hp pump, Hayward T-15 SWCG, TF-100
    Pool School - Chlorine / CYA Chart; Pool School - Test Kits Compared;

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    Re: Filling the pool on Friday

    Here's an off-topic, newbie question...
    How can I clean the skimmer basket in my pump without it constantly overflowing with water? Do I just plug the skimmer and the return port?
    Jeremy
    30ft round, 21k gallon AG Vinyl Pool, Doughboy Powerline XP I Series 1Hp single-speed Pump (0-3296-203), Doughboy Silica II Sand Filter (0-1750-000)
    Taylor K-2006 Test Kit with SpeedStir

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    DaninFLA's Avatar
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    Re: Filling the pool on Friday

    do you have a valve to isolate the pump?
    Dan
    9,000 gallon in-ground Saltwater pool, plaster, cartridge filer, 1.0 hp pump, Hayward T-15 SWCG, TF-100
    Pool School - Chlorine / CYA Chart; Pool School - Test Kits Compared;

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    Re: Filling the pool on Friday

    Quote Originally Posted by DaninFLA View Post
    do you have a valve to isolate the pump?
    Unfortunately, no. The line from the skimmer goes straight into the pump.
    Jeremy
    30ft round, 21k gallon AG Vinyl Pool, Doughboy Powerline XP I Series 1Hp single-speed Pump (0-3296-203), Doughboy Silica II Sand Filter (0-1750-000)
    Taylor K-2006 Test Kit with SpeedStir

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    DaninFLA's Avatar
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    Re: Filling the pool on Friday

    then need to plug the skimmer and return line. I would do that, and then go to home depot and get some ball valves and install them on both sides of the pump. wont take long to glue them in, and save you time in the future when you have to clean your pump
    Dan
    9,000 gallon in-ground Saltwater pool, plaster, cartridge filer, 1.0 hp pump, Hayward T-15 SWCG, TF-100
    Pool School - Chlorine / CYA Chart; Pool School - Test Kits Compared;

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    Re: Filling the pool on Friday

    Pic of water clarity and silt.


    - - - Updated - - -

    Quote Originally Posted by DaninFLA View Post
    then need to plug the skimmer and return line. I would do that, and then go to home depot and get some ball valves and install them on both sides of the pump. wont take long to glue them in, and save you time in the future when you have to clean your pump
    Thanks for the tip!
    Attached Images Attached Images
    Jeremy
    30ft round, 21k gallon AG Vinyl Pool, Doughboy Powerline XP I Series 1Hp single-speed Pump (0-3296-203), Doughboy Silica II Sand Filter (0-1750-000)
    Taylor K-2006 Test Kit with SpeedStir

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