Become a TFP Supporter Pool Math Forum Rules Pool School
Results 1 to 8 of 8

Thread: Properly draining a plaster pool (in AZ)

  1. Back To Top    #1

    Properly draining a plaster pool (in AZ)

    I have a 9,400 gallon plaster pool in Southern, AZ. My CYA is > 200 from using chlorine bricks (before discovering this site). Using the pool calculator, I need to drain approximately 80% of my pool. When doing a google search for properly draining a pool, just about every site says not to, or I run the risk of the hydrostatic pressure raising or popping my pool. This scares me quite a bit. What do I need to do to get this done safely? I'm sure I could pay the pool company to do it for me, and the liability rests with them, but what are they going to do or have that I couldn't?

    The pool was built in 2004 by the previous owners, so I'm not sure if there's a hydrostatic release valve or not. I'm not even sure what to look for with this. The guy at the pool store said just to drain it and refill in the same day and I'd be fine, but given all the warnings online I'm a little hesitant. Does anyone else in this part of the country have experience draining a pool?
    25000 G, Kidney Shaped, In Ground, Cement Pebbled Finish, Sand Filter

  2. Back To Top    #2
    Guest

    Re: Properly draining a plaster pool (in AZ)

    Quote Originally Posted by scottyja
    I have a 9,400 gallon plaster pool in Southern, AZ. My CYA is > 200 from using chlorine bricks (before discovering this site). Using the pool calculator, I need to drain approximately 80% of my pool. When doing a google search for properly draining a pool, just about every site says not to, or I run the risk of the hydrostatic pressure raising or popping my pool. This scares me quite a bit. What do I need to do to get this done safely? I'm sure I could pay the pool company to do it for me, and the liability rests with them, but what are they going to do or have that I couldn't?

    The pool was built in 2004 by the previous owners, so I'm not sure if there's a hydrostatic release valve or not. I'm not even sure what to look for with this. The guy at the pool store said just to drain it and refill in the same day and I'd be fine, but given all the warnings online I'm a little hesitant. Does anyone else in this part of the country have experience draining a pool?

    OR, you could just contact these folks and save most of your water... www.calsaway.com

  3. Back To Top    #3
    JasonLion's Avatar
    Join Date
    May 2007
    Location
    Silver Spring, MD
    Posts
    37,879

    Re: Properly draining a plaster pool (in AZ)

    In Arizona a calcium removal service like Calsaway is a good option. In general, you can drain a plaster pool as long as the ground water level is low enough and the daytime highs aren't too high. I expect that both of these will be fine in most of AZ this time of year, certainly the high temperatures aren't going to be too high. Ground water levels are a little more difficult to be sure of, but are not a big issue in most of AZ most of the time. You can find out more about ground water levels if you have a well, or other hole in the ground, that is nearly as deep as your pool or deeper, or by talking to other people in the area to see if you can find someone who knows what ground water levels typically are in your specific area.
    19K gal, vinyl, 1/2 HP WhisperFlo pump, 200 sqft cartridge filter, AutoPilot Digital SWG, Dolphin Dynamic cleaning robot
    Creator of PoolMath and Pool Calculator. Other handy links: Support this site, TF Test Kits, Pool School

  4. Back To Top    #4

    Re: Properly draining a plaster pool (in AZ)

    Quote Originally Posted by salp
    OR, you could just contact these folks and save most of your water... http://www.calsaway.com
    That's pretty impressive... didn't know a service could do that. I wonder how much it would cost compared to pump rental and fill water. It looks like that company services Phoenix area. I couldn't find anything similar for Tucson/Benson area.
    25000 G, Kidney Shaped, In Ground, Cement Pebbled Finish, Sand Filter

  5. Back To Top    #5
    JasonLion's Avatar
    Join Date
    May 2007
    Location
    Silver Spring, MD
    Posts
    37,879

    Re: Properly draining a plaster pool (in AZ)

    Services like Calsaway are usually very competitive with water replacement as long as you are inside their main service area. This kind of service has been around in limited areas for several years, but it isn't available most places.
    19K gal, vinyl, 1/2 HP WhisperFlo pump, 200 sqft cartridge filter, AutoPilot Digital SWG, Dolphin Dynamic cleaning robot
    Creator of PoolMath and Pool Calculator. Other handy links: Support this site, TF Test Kits, Pool School

  6. Back To Top    #6
    Guest

    Re: Properly draining a plaster pool (in AZ)

    Scottyja,

    I talk to David Morgan at Calsaway today, they can cover down to Tucson for an extra fee. It's worth the call. Tell Dave you talk to me.

  7. Back To Top    #7
    Melt In The Sun's Avatar
    Join Date
    Oct 2009
    Location
    Tucson, AZ
    Posts
    3,899

    Re: Properly draining a plaster pool (in AZ)

    just to let you know, i have drained my pool entirely in Tucson. The water table is several hundred feet down, and your pool will not pop.
    11,200 gal, Pebble-Tec; Tristar 2-speed 1hp - Swimclear 325 ft2 cart - SWG - A & A in-floor cleaner - Heat pump. For the poolside cooking, a Yoder Wichita and a Big Steel Keg!
    TF Test Kits -- PoolMath -- Pool School
    Make each day your masterpiece. - John Wooden

  8. Back To Top    #8

    Re: Properly draining a plaster pool (in AZ)

    Quote Originally Posted by Melt In The Sun
    just to let you know, i have drained my pool entirely in Tucson. The water table is several hundred feet down, and your pool will not pop.
    Thanks for the info, exactly what I was looking for.
    25000 G, Kidney Shaped, In Ground, Cement Pebbled Finish, Sand Filter

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •