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Thread: Filling pool overnight - can I go to sleep?

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    Join Date
    May 2012
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    Auburn, AL
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    25

    Filling pool overnight - can I go to sleep?

    Hello everyone,

    This is my first "real" post here.

    I'm a new pool owner. We just bought this house a few weeks ago and I'm finally getting around to stabilizing the pool water.

    The previous owner must have been a fan of Trichlor because the CYA levels were off-scale HIGH on my La Motte ColorQ tester. This is mostly verified by cutting my test water sample by 1/3 pool water and 2/3 tap water. After one partial drain and fill, I am down to 105 ppm CYA.

    This is a vinyl in-ground pool, 30,000 gal. and I just added an Intellichlor IC40 SWG. I have a sand filter with the standard Hayward rotating lever valve. I have no diving well main drain, just one skimmer intake. I've drained the pool to about 8 inches below the skimmer line.

    My question is, are there any settings I can configure such that I can leave the hose running into the pool overnight and not overflow the pool?

    My property is easily 20-30 feet above the street and the waste line runs down to the storm drain underground.
    If I open the waste line and leave pumps and SWG turned OFF, will gravity take care of overflow via pressure on the open waste line and discharge down the property to the storm drain?

    Many thanks for your time and opinions!
    Phil
    18'x36' 30,000 gal IGP, Sand Filter, Intellichlor IC40 SWG, Main and Booster pumps with Polaris 360.

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    Join Date
    Jun 2007
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    New Jersey
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    Re: Filling pool overnight - can I go to sleep?

    If the highest point in the plumbing is above the level of the water in the pool, no flow will occur to the waste line without the action of the pump. This is probably either the pump outlet pipe or the multiport--if that point is higher than the level you wish not to exceed, your plan won't work. Does the pump basket fill by itself when pool is full? If the pump basket does not fill by itself when the pool is full, then you will certainly overflow, or at least go above the 'full' llevel.

    The other thing is, once the flow starts, if it does, it will probably exceed the flow of your hose and drain the pool down to where the siphon breaks, i.e. just above the mouth of the skimmer.
    Current: 28,000G 18'x36' I/G AnthonySylvan Plaster; Waterway 60 sq.ft. DE Filter; 1.0hp x 1.65 SF Two-Speed (B2982) WhisperFlo; 2004-Present
    Previous: 40,000G 20'x40' I/G Koven unlined WWII salvage 5/8" marine steel; Lomart Stainless Sand Filter; 3/4hp Hayward SuperPump; 1946-2003 (managed by me from about 1964)
    Ancient Taylor K-2000, upgraded with Taylor CH, TA, and FAS-DPD, and TFT CYA tests.

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    Re: Filling pool overnight - can I go to sleep?

    I know you didn't ask this question but if your CYA is still 100+, you will find it very difficult to manage the pool. 70ppm would make your life much easier.
    Dave S.
    42k vinyl and concrete pool, 1.5hp pump, 140gpm filter
    TFTestkits , PoolMath , Pool School

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    Join Date
    May 2012
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    Auburn, AL
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    Re: Filling pool overnight - can I go to sleep?

    Well, the flow rate out of two hoses came nowhere near overflowing the pool, so my question was moot. I appreciate the plumbing opinions.

    Quote Originally Posted by duraleigh
    I know you didn't ask this question but if your CYA is still 100+, you will find it very difficult to manage the pool. 70ppm would make your life much easier.
    Ha - yeah, at lunch today I was at 90 ppm CYA, now (7:30 PM) I'm down to 49 ppm CYA now, probably going to 30-ish tonight.

    I'm peeved at the pool service guy that installed the Intellichlor IC40 a few days ago (before I had my CYA test kit and didn't know my reading). He did NOT test the CYA level and just dumped the salt bags in. LOT OF GOOD THAT DID ME. I will not be using that service again.

    My cousin-in-law says he runs between 20-30 CYA and keeps water balance stable as he also has an SWG.
    18'x36' 30,000 gal IGP, Sand Filter, Intellichlor IC40 SWG, Main and Booster pumps with Polaris 360.

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    Lynchburg VA
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    Re: Filling pool overnight - can I go to sleep?

    I dont understand how your CYA went from 90 at lunch, 49 at 730 and the 30s tonight? Are you still in the change water/refill process? I thought you ran CYA higher with a SWG?

    pool-school/water_balance_saltwater_generator
    18x36 Vinyl In-ground w/roman ends 27,400G, Hayward 3/4hp with 300# sand filter. Hayward heat pump heater

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    Join Date
    May 2012
    Location
    Auburn, AL
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    Re: Filling pool overnight - can I go to sleep?

    Yes, I was in a big drain/fill/drain/fill operation.

    I'm still learning but I knew I wanted to go on the low side of the CYA band for now.

    Thanks!

    Quote Originally Posted by BadOleRoss
    I dont understand how your CYA went from 90 at lunch, 49 at 730 and the 30s tonight? Are you still in the change water/refill process? I thought you ran CYA higher with a SWG?

    pool-school/water_balance_saltwater_generator
    18'x36' 30,000 gal IGP, Sand Filter, Intellichlor IC40 SWG, Main and Booster pumps with Polaris 360.

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