Become a TFP Supporter Pool Math Forum Rules Pool School
Results 1 to 9 of 9

Thread: shelf life of muriatic acid?

  1. Back To Top    #1

    shelf life of muriatic acid?

    My pool turned into a frog pond here lately. (hurricanes, pump quit, ad infinitum, ad nauseam ) and I want to clean it up before covering it for winter. That means ph up, down, up, down,--

    I have to drive 20+ miles to get to the store for the acid so I want to be sure to get enough to do the job so I don't have to make another trip just for that. But if it isn't going to last out the winter I sure don't want to buy too much! (I'm considering buying 10 gallons)

    So will sealed plastic gallon bottles of Muriatic acid last, say, through next summer?

    Thanks!
    ETexas 24,000 Vinyl lined IG cartridge filter:(

  2. Back To Top    #2

    In the Industry
    duraleigh's Avatar
    Join Date
    Apr 2007
    Location
    Sebring, Florida
    Posts
    28,409

    Re: shelf life of muriatic acid?

    The shelf life for muriatic is a long, long time......certainly way into next summer.

    I am concerned that you need it in the first place. What will cause your pH to rise so rapidly that you intend to use that much muriatic.

    Shocking a pool and clearing it should take little, if any, acid.
    Dave S. - Forum owner
    42k vinyl and concrete pool, 1.5hp pump, 140gpm filter
    TFTestkits , PoolMath , Pool School

  3. Back To Top    #3

    Re: shelf life of muriatic acid?

    TA is high, 8.something, so I'll have to do the yo yo thing. Also, my source water is Ph high so as I vacuum out and refill, I'll have to bring it down as well. I have no earthly idea how much I'll need. I just don't want to run short.
    Thanks.
    ETexas 24,000 Vinyl lined IG cartridge filter:(

  4. Back To Top    #4

    In the Industry
    duraleigh's Avatar
    Join Date
    Apr 2007
    Location
    Sebring, Florida
    Posts
    28,409

    Re: shelf life of muriatic acid?

    If your pH is above 8.0, you need to get it down sooner rather than later. If your T/A is high as well, I understand your need for the large quantities of muriatic.

    In your first post, you seemed to relate that (pH and T/A) to clearing your pool of algae. pH & T/A are not related to algae blooms (for our purposes). You need chlorine and lots of it to clear an algae-laden pool.
    Dave S. - Forum owner
    42k vinyl and concrete pool, 1.5hp pump, 140gpm filter
    TFTestkits , PoolMath , Pool School

  5. Back To Top    #5

    Re: shelf life of muriatic acid?

    I posted a question about my frog pond--er pool-- here... scummy-frog-pond-halp-pleeze-t9753.html. The info I got suggested I needed to get the one under control to maximise the effectiveness of my chlorine (dollar store 6% variety)
    ETexas 24,000 Vinyl lined IG cartridge filter:(

  6. Back To Top    #6
    TizMe's Avatar
    Join Date
    Aug 2007
    Location
    Covington, Georgia
    Posts
    920

    Re: shelf life of muriatic acid?

    I think if you go back and re read you other post (as I did) I dont see where anyone said getting your PH and TA under control was essential to your algae control.

    Jason said your high PH and TA will likely cause scaling and if it had been that way for awhile its probably going to get as bad as it gets as far as scaling was concerned but if the high PH and TA is recent then you should consider getting it under control now ....

    MikeInTn said basically the same thing but added that high PH and TA are not the cause of your algae problem but that low chlorine levels was the root cause as did Duraleigh have the same comment as Mike.

    Chlorine, and lots of it are the only thing that will kill the algae off along with brushing and vacuuming the pool. Keeping the water "balanced" allows the chlorine to keep the algae killed off which includes maintaining a min FC level for your CYA level on a daily basis. If you know your going to have a "high bather" load on certain days then adding a little more chlorine before hand will also help the situation because your already anticipating more than normal organics being introduced to the pool water.

    However, once you start shocking the pool water or if you already are,(shocking), the high chlorine levels will throw off your Ph readings and they wont be accurate and wont become that way until after your done shocking and your FC level falls below 10ppm ....
    Les
    Don't have a pool right now. Just sharing what I have learned over the years!
    Helpful Links:
    Pool School,Pool Calculator,Cl/CYA Shock Chart,TF Test Kit
    Doing BBB and loving it!

  7. Back To Top    #7

    In the Industry
    duraleigh's Avatar
    Join Date
    Apr 2007
    Location
    Sebring, Florida
    Posts
    28,409

    Re: shelf life of muriatic acid?

    The info I got suggested I needed to get the one under control to maximise the effectiveness of my chlorine
    Yeah, there is a relationship there but the effect of high pH & T/A on the effectiveness of your chlorine is not nearly as important as not having enough chlorine.

    That said, I would still suggest you reduce your pH immediately to minimize the chances of scaling and liner damage. Use chlorine to clear the algae.

    There are some good articles in pool school that will help you get your pool back in balance and crystal clear.
    Dave S. - Forum owner
    42k vinyl and concrete pool, 1.5hp pump, 140gpm filter
    TFTestkits , PoolMath , Pool School

  8. Back To Top    #8

    Re: shelf life of muriatic acid?

    Fellows, I am gloriously confused!
    But Be that as it may, I have lots of acid, lots of chlorine, and I haven't started yet. I intend to start in the morning. So unless I hear otherwise, I reckon to start by lowering the Ph, then dumping copious amounts of chlorine into the pool. I'm off to try and figure how much "copious" is.
    ETexas 24,000 Vinyl lined IG cartridge filter:(

  9. Back To Top    #9
    JasonLion's Avatar
    Join Date
    May 2007
    Location
    Silver Spring, MD
    Posts
    37,887

    Re: shelf life of muriatic acid?

    Good plan! We would love to hear a blow by blow description of how it goes.
    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

Posting Permissions

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