Become a TFP Supporter Pool Math Forum Rules Pool School
Results 1 to 5 of 5

Thread: I plan to super shock my pool with potassium monopersulfate

  1. Back To Top    #1

    Join Date
    Jun 2010
    Location
    San Antonio, Texas
    Posts
    23

    I plan to super shock my pool with potassium monopersulfate

    Hi - I am new to this site today. Because this is a "quick reply" I won't bore with the backstory of this pool - but it's a whopper. I have much more to read on this site nd no doubt will learn great things about modern pool care.
    Today I plan to super shock my pool with potassium monopersulfate. Keeping within this thread I wanted to share what I paid for the bags of MPS from the local pool supply store...12 x 1 lb. bags = $50.

    55,000 gal IG Zars Pool /D.E. Filter/Polaris 360 Pool Cleaner
    24,268 gal/DE/IG Plaster
    Pentair 320 Auto In-Line Chlorine/Bromine Filter, Century Magnatec 2 spd. motor, PB4 Booster Pump, Purex Triton Whisperflo Pump, Polaris 380 Pool Cleaner

  2. Back To Top    #2

    Join Date
    Aug 2009
    Location
    North Central Texas
    Posts
    1,358

    Re: Non Clorine Shock?

    I keep the MPS around for those other than me, to put into the Bromine Spa, after soaking. It's just so much easier to use, for them, and that way is does get done. Otherwise, after soaking, I use bleach unless I have to go all the way out to the garage for a new big bottle of bleach; then I use the MPS.

    gg=alice
    1981, 25K, IG, Blue Plaster 1996, somewhat oval, widens a bit at shallow end, 1.5" pipes, 2" at Pad, 1 separate main drain, 1 skimmer, 4 returns + dedicated cleaner return, 10 ft deep end with very fast decline from shallow, Pentair Quad 80 DE, Pentair Intelliflo VF, 3/4 HP Booster Pump (equipment pad about 8 ft below top of pool), Challanger 3/4 Trash/Emergency Pump 120v, Polaris 280 (pressure), iRobot Verro cleaner (robotic), Aquabot Turbo (robotic), Jacuzzi Tracker 4X (vacuum) Pool Blaster (Buster), Two (2) PoolSkims, Solar Breeze (solar powered top skimmer) (beta to ver. 2, release date 2010), ColorSplash LED replacement bulb. Aries 550 gal separate spa, 2002 (our 3rd and BEST spa) , BBB-Bromine

  3. Back To Top    #3

    Re: Non Clorine Shock?

    Great discussion! Am I correct in that some of the non-chlorine shock products usually allow you back in the pool in as little as 15 minutes after application? If so, I could see this as one of the main reasons to keep some of this product on hand. Being a new pool owner, I'm finding my pool is filled with friends/family every single weekend and so I find it best to shock the pool on Friday evening before the weekend crowd arrives. I then feel secure that my pool is ready for the heavy bather load over the weekend. However, in those cases where I might not be able to get this done before my guests arrive, or in case an accident occurs while they are here, I'm thinking having some non-chlorine shock product on hand would still allow me to shock it perhaps on Saturday morning, right before everyone wants to jump in - or maybe even between swimming sessions (if I notice bather load has impacted my chlorine levels).

    Thoughts? Am I on the right track here??

    Thanks,
    Tim
    20'6" X 38'6" (609 sqft)
    22,500 gal gunite/plaster IGP
    DE filter, Jandy 2HP pump, Nature2 Sanitizer (removed cartridge!)
    Raypak 39.9K BTU gas heater
    2 ColorLogic lights, Maytronics Dolphin pool cleaner

  4. Back To Top    #4
    JasonLion's Avatar
    Join Date
    May 2007
    Location
    Silver Spring, MD
    Posts
    37,879

    Re: I plan to super shock my pool with potassium monopersulfate

    watermaverick, why would you shock the pool with MPS? Chlorine is less expensive and more effective for outdoor pools.

    tim_pool_newbie, there isn't normally any reason to shock the pool, so how long you need to wait after shocking really isn't an issue. And if there is a reason to shock, then you shouldn't be swimming regardless.
    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

  5. Back To Top    #5

    Join Date
    Mar 2007
    Location
    San Rafael, CA USA
    Posts
    12,082

    Re: Non Clorine Shock?

    Quote Originally Posted by tim_pool_newbie
    Being a new pool owner, I'm finding my pool is filled with friends/family every single weekend and so I find it best to shock the pool on Friday evening before the weekend crowd arrives. I then feel secure that my pool is ready for the heavy bather load over the weekend.
    As Jason noted, there is no need to shock the pool. If you are worried about the higher bather load, you can just raise your FC level to accommodate it. So if you've got 50 ppm CYA, then instead of having 4 ppm FC minimum you could have 6 ppm or 7 ppm FC instead. You can also test the chlorine level in the morning before they arrive (and add more if needed) and then test again in the evening (and add more if needed).

    It would take a pretty extraordinary bather load to use up a lot more chlorine in your pool. Every bather-hour in your 22,500 gallon pool only contributes a chlorine demand of around 0.05 ppm FC. So unless you have a lot of kids (or adults, for that matter) peeing in your pool, I doubt your chlorine usage will be higher by more than 1-2 ppm FC. Most of the chlorine loss will still likely be from sunlight perhaps at 2-3 ppm FC for the day.

    If you accurately measure your FC level before and after your guests have used the pool, then let us know what you find out compared to normal chlorine losses during the day.
    16,000 gallon outdoor in-ground 16'x32' plaster pool; Pentair Intelliflo VF pump; Pentair IntelliTouch i9+3s control system; Jandy CL-340 square foot cartridge filter
    12 Fafco solar panels; Purex Triton PowerMax 250 natural gas heater (200,000 BTU/hr output); automatic electric pool safety cover; 4-wheel pressure-side "The Pool Cleaner"

Posting Permissions

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