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Thread: Draining my pool?

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    Join Date
    Oct 2013
    Location
    Santa Clarita, CA
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    12

    Draining my pool?

    Hi, first post here. I've been lurking for a while. I'm new to pool ownership, having just bought a house with the pool listed below in my sig. I've been digesting all the info here and I think I've got a pretty good handle on the water chemistry thing....except for my calcium hardness. I did several tests and it's showing in the mid-800 range. Our water is pretty hard to begin with (tap is about 250) but it seems I need to drain and refill. According to the pool calculator I need to drain about 70 percent of the water.

    I'm trying to figure out if my pool's plumbing has a connection to the sewer in order to drain it. There are a whole mess of valves and shutoffs back there, but none of them are labeled so I don't know what I've got going on. Is there something I should look for in the plumbing that would indicate if there's a connection to the sewer from the pool plumbing? If not I guess I'll have to drain it manually with a sump pump, but that seems like a bit of a pain.

    I can post pics of my plumbing setup if that would help.
    17.5K inground plaster pool/spa, Aquapure PLC 1400 SWG, Jandy stealth 1.0 hp pump, 1.5 hp booster pump, Jandy 60 sqft DE filter, 400,000 btu heater, Zodiac MX 8 cleaner

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    pwrstrk's Avatar
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    Aug 2012
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    Elverson Pa.
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    4,758

    Draining my pool?

    Welcome to TFP !
    I can't comment on your plumbing question, but I'll comment on the drain refill. If you have a high water table do partial drains and fills so not to risk "floating" the pool.
    Post some pics of your plumbing if you can to help others help you.
    Enjoy the forum.
    Jeff
    24'x54" AG Morada RTR (by wilbar) 13'500 gal. Hayward Powerflo Matrix 1hp 2 speed. Hayward Perflex EC65 DE filter.

  3. Back To Top    #3
    Richard320's Avatar
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    Jan 2010
    Location
    San Dimas, CA (LA County)
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    Re: Draining my pool?

    Welcome!

    Pictures help a lot. If you have a multiport valve (looks like this) then you just set it to waste and hook up a backwash hose... unless it's hard plumbed to a sewer connection somewhere. Otherwise, you'll probably want to rent a submersible. Or buy one, although an affordable one is going to take days to empty the pool. Again, a picture will help a lot.

    I have similar Calcium levels and fill water. Realistically, draining half would buy you lots of breathing room - you can forget the "ideal" levels that other parts of the country use when you live around here. Floating your pool is probably not a concern in Santa Clarita. I have a hose bib on my return line, or sometimes I use a cheap submersible pump, and use pool water on the lawn and then refill with tap. But not constantly, because I get lazy. However, each time I do that I replace about 4% of the water. I also have a downspout aimed at the pool so when we do get rain, I get as much of it as I can in the pool.

    You're at the upper limit of what's actually manageable for CH. It will require maintaining low TA and low pH to prevent scale formation. I keep TA 50-60 and pH below 7.5, always targeting 7.2 when I add acid. I'm just waiting for some rain so I can soften up my pool water.
    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!

  4. Back To Top    #4

    Join Date
    Oct 2013
    Location
    Santa Clarita, CA
    Posts
    12

    Re: Draining my pool?

    Quote Originally Posted by Richard320
    Welcome!

    Pictures help a lot. If you have a multiport valve (looks like this) then you just set it to waste and hook up a backwash hose... unless it's hard plumbed to a sewer connection somewhere. Otherwise, you'll probably want to rent a submersible. Or buy one, although an affordable one is going to take days to empty the pool. Again, a picture will help a lot.

    I have similar Calcium levels and fill water. Realistically, draining half would buy you lots of breathing room - you can forget the "ideal" levels that other parts of the country use when you live around here. Floating your pool is probably not a concern in Santa Clarita. I have a hose bib on my return line, or sometimes I use a cheap submersible pump, and use pool water on the lawn and then refill with tap. But not constantly, because I get lazy. However, each time I do that I replace about 4% of the water. I also have a downspout aimed at the pool so when we do get rain, I get as much of it as I can in the pool.

    You're at the upper limit of what's actually manageable for CH. It will require maintaining low TA and low pH to prevent scale formation. I keep TA 50-60 and pH below 7.5, always targeting 7.2 when I add acid. I'm just waiting for some rain so I can soften up my pool water.
    Thanks Richard. I don't have a multiport valve, just the one with two positions, filter or backwash. I'll take some pics tomorrow and hopefully someone can tell me what the heck all those valves are for.
    17.5K inground plaster pool/spa, Aquapure PLC 1400 SWG, Jandy stealth 1.0 hp pump, 1.5 hp booster pump, Jandy 60 sqft DE filter, 400,000 btu heater, Zodiac MX 8 cleaner

  5. Back To Top    #5

    Join Date
    Oct 2013
    Location
    Santa Clarita, CA
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    12

    Re: Draining my pool?

    OK as promised here are the pics of my plumbing system






















    And it's all for this...one of the main reasons we bought the house!


    So, can anyone tell me what all those valves do? And more importantly, is anyone able to tell if any of them connect to the sewer?

    Thanks!
    17.5K inground plaster pool/spa, Aquapure PLC 1400 SWG, Jandy stealth 1.0 hp pump, 1.5 hp booster pump, Jandy 60 sqft DE filter, 400,000 btu heater, Zodiac MX 8 cleaner

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    Richard320's Avatar
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    Jan 2010
    Location
    San Dimas, CA (LA County)
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    18,768

    Re: Draining my pool?

    Wow, what a mess!

    The backflush valve isn't plumbed to a sewer that I can see. The discharge is out the bottom, and it seems to go nowhere.


    This is also a puzzler. You have an automated 3 way valve splitting flow between two pipes, yet one has the gate valve closed.
    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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