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Thread: The Big Drain..... and Refill

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    Thumbs up The Big Drain..... and Refill

    Opened my pool for the first time after buying my house with pool late last year.

    I was very disappointed today when I did the CYA and the water was only halfway to the 100 mark and I already couldn't see the dot.
    I finally had to dilute the sample to 1 part pool water/ 3 parts tap water and got a result of 70ppm. (So 280ppm CYA).

    This is the result of very heavy puck usage.

    so after a minor come-apart I lined the pump up to the main drain and pumped out about 2.5 feet.
    I'm afraid to pump out more and have to buy a new liner.
    Pool math says I need to change 82% of the water.
    This is going to take forever only changing a few feet at a time with a hose.
    Yesterday it took almost 15 hours to add 1.5 ft.


    Just wanted to let you all know what's going on....
    Photobucket doesn't seem to be working properly so I can't share the picture I took
    33,000 gal Inground Vinyl Liner
    Hayward Sand Filter
    2 skimmers
    2 returns
    1 vacuum line
    1 main drain

  2. Back To Top    #2
    Casey's Avatar
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    Re: The Big Drain..... and Refill

    And at least you know why you shouldn't use pucks exclusively! Get it fixed now so you can enjoy the summer.

    POP... Pool Owner Patience!
    I'd bet you my bikini you'll never get TFP water from a pool store!

    24' Sharkline Venture De Filter

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    Re: The Big Drain..... and Refill

    Hang in there. As Casey says, you know the cause and you'll have a great Summer.
    Dave S.
    42k vinyl and concrete pool, 1.5hp pump, 140gpm filter
    TFTestkits , PoolMath , Pool School

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    Re: The Big Drain..... and Refill

    Thanks for the encouragement Dave and Casey.

    Since I know this board loves pictures....




    33,000 gal Inground Vinyl Liner
    Hayward Sand Filter
    2 skimmers
    2 returns
    1 vacuum line
    1 main drain

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    Re: The Big Drain..... and Refill

    Oh, yeah! You're pretty close!
    Dave S.
    42k vinyl and concrete pool, 1.5hp pump, 140gpm filter
    TFTestkits , PoolMath , Pool School

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    Re: The Big Drain..... and Refill

    Today's test still with 1 part pool water/3 parts tap water gave me about 200 ppm CYA.

    Pumping water out right now.
    Took about 17 hours overnight to replace what I pump out yesterday with the hose.

    Hope im doing the test properly.
    Waist height with the sun at my back.
    33,000 gal Inground Vinyl Liner
    Hayward Sand Filter
    2 skimmers
    2 returns
    1 vacuum line
    1 main drain

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    Re: The Big Drain..... and Refill

    I pumped out more this last Saturday night.
    30 hours of fill time.
    Will retest later today when I get home.
    33,000 gal Inground Vinyl Liner
    Hayward Sand Filter
    2 skimmers
    2 returns
    1 vacuum line
    1 main drain

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    Charlie_R's Avatar
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    Re: The Big Drain..... and Refill

    It's a pain in the backside, yes.

    Anyone who has been through the battle will tell you the results are worth the time and expense.

    Following the advice on this forum will give you the cleanest best looking pool in your neighborhood, barring only those others that use these same methods.

    Keep up the good work! You'll get there soon.
    15'x48" 4500 gallon Intex pool, buried 1.5 ft. Pac-Fab Dynamo 3/4 hp pump. Hayward S180T sand filter, bought used. Taylor K-2006 test kit. Rocket mass heater based wood fired pool heater.

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    Mark R's Avatar
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    Re: The Big Drain..... and Refill

    I did the same process around January and my water has been so clear. Before the drain, the water tasted salty and had a strong chlorine smell. Now the water is a joy to go in and taste like Fiji water now. lol. I loving Trouble Free Pool ! Water temp hit 80 last Thursday with the solar running. My skin doesn't seem to dry out as much now either.

    #HatePucks
    12k gal Gunite/Hayward filter C5520BH with quad 33 inch filters. 2.5 hp motor. Pool is on south side, so full sun light. Spill over spa.
    Laar's heater LT250-Low NOx Gas Fired for pool/spa 250,000 BTU. Roof mount 6 panel solar system installed east/south. TF-100 test kit. May-September 100+ degrees out side.

  10. Back To Top    #10

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    Re: The Big Drain..... and Refill

    Finally some decent test results!!
    Thanks folks for the encouragement.

    CYA: 60
    CH: 260
    TA: 230
    pH: 7.2

    I am currently adding chlorine shooting for a SLAM level of 24 ppm.

    Water looks ok- not really sparkling in the deep end.
    33,000 gal Inground Vinyl Liner
    Hayward Sand Filter
    2 skimmers
    2 returns
    1 vacuum line
    1 main drain

  11. Back To Top    #11

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    Re: The Big Drain..... and Refill

    Having some trouble with the FAS DPD test.

    I added 6 gallons of 10% to my pool which is enough to bring it to 18-19 ppm chlorine
    then waited 30 minutes for water to circulate
    the OTO test indicates over 5ppm (expected)
    While completing FAS DPD I added one heaping scoop of powder to 10ml water, then count drops of r-0871 I only get 5 drops when It turns clear (X 0.5 = 2.5 ppm FC)

    what am I missing?
    33,000 gal Inground Vinyl Liner
    Hayward Sand Filter
    2 skimmers
    2 returns
    1 vacuum line
    1 main drain

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    Re: The Big Drain..... and Refill

    Hard to say. Your procedures are correct and your calculations are correct. It is unlikely (but possible) that continuing algae could consume THAT much FC that fast.

    What does your water look like?

    Did you perform the CC's test? What result?
    Dave S.
    42k vinyl and concrete pool, 1.5hp pump, 140gpm filter
    TFTestkits , PoolMath , Pool School

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    Re: The Big Drain..... and Refill

    Hard to get a decent picture with the sun at it's late angle but the water looks great.

    I just now now completed the test again after an hour of circulation and got 8 drops before it turned clear (so 4ppm)
    then only 1 drop to turn it back to clear for CC test.


    Maybe I need to give it more time for circulation to get all the chlorine mixed in?





    33,000 gal Inground Vinyl Liner
    Hayward Sand Filter
    2 skimmers
    2 returns
    1 vacuum line
    1 main drain

  14. Back To Top    #14
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    Re: The Big Drain..... and Refill

    With that L shaped pool, you may need to circulate for an hour or so before retesting, providing you have at least a skimmer or main drain operating in the deep end, with a return.

    - - - Updated - - -

    If you have the valving for it, try just pulling from the main drain for an hour after dosing.
    15'x48" 4500 gallon Intex pool, buried 1.5 ft. Pac-Fab Dynamo 3/4 hp pump. Hayward S180T sand filter, bought used. Taylor K-2006 test kit. Rocket mass heater based wood fired pool heater.

  15. Back To Top    #15

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    Re: The Big Drain..... and Refill

    Quote Originally Posted by Charlie_R View Post
    With that L shaped pool, you may need to circulate for an hour or so before retesting, providing you have at least a skimmer or main drain operating in the deep end, with a return.

    - - - Updated - - -

    If you have the valving for it, try just pulling from the main drain for an hour after dosing.
    ok I will try to give more time for it to get mixed in.
    I had the skimmers and the main drain both going as there is a ton of tree Garbage that flew in today.
    33,000 gal Inground Vinyl Liner
    Hayward Sand Filter
    2 skimmers
    2 returns
    1 vacuum line
    1 main drain

  16. Back To Top    #16

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    Re: The Big Drain..... and Refill

    Well...
    My pool claimed its first iPhone.
    I know better than to keep it in my pocket. Sheesh.

    FC is sitting down around 3ppm (OTO and fas dpd) after 6 gallons of 10% with almost 2 hours to circulate.
    I added 2 more gallons which is close enough to the 7.5 that pool math called for to achieve 24 ppm slam.

    Is is it possible that my pool ate up all that chlorine already with almost sparkling water?
    33,000 gal Inground Vinyl Liner
    Hayward Sand Filter
    2 skimmers
    2 returns
    1 vacuum line
    1 main drain

  17. Back To Top    #17
    Charlie_R's Avatar
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    Re: The Big Drain..... and Refill

    It is possible. If you can't read the date on a quarter in your deep end, it's not quite sparkly. Just kidding, but you get the point.

    Just because you can't see it, doesn't mean it isn't there. Keep hammering at it, and very soon you will have your slam level.
    15'x48" 4500 gallon Intex pool, buried 1.5 ft. Pac-Fab Dynamo 3/4 hp pump. Hayward S180T sand filter, bought used. Taylor K-2006 test kit. Rocket mass heater based wood fired pool heater.

  18. Back To Top    #18

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    Re: The Big Drain..... and Refill

    I can see the Phillips head screws on the main drain cover, and the spider next to it. Through 8 feet of water.
    It really is pretty clear.


    Thanks for the encouragement Charlie.
    33,000 gal Inground Vinyl Liner
    Hayward Sand Filter
    2 skimmers
    2 returns
    1 vacuum line
    1 main drain

  19. Back To Top    #19

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    Re: The Big Drain..... and Refill

    I cannot imagine a pool that clear consuming the amount of FC that yours has.

    Secondly, circulating for 30 minutes should be plenty of time.

    The last thing I can think of is the FC you purchased is old and does not have the strength that the bottle says.

    Short of that, I am lost.
    Dave S.
    42k vinyl and concrete pool, 1.5hp pump, 140gpm filter
    TFTestkits , PoolMath , Pool School

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    Re: The Big Drain..... and Refill

    Quote Originally Posted by duraleigh View Post

    The last thing I can think of is the FC you purchased is old and does not have the strength that the bottle says.

    This is what I am thinking.
    33,000 gal Inground Vinyl Liner
    Hayward Sand Filter
    2 skimmers
    2 returns
    1 vacuum line
    1 main drain

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