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

Thread: How unwise is it to dump a bag of cal-hypo powder in the inline feeder?

  1. Back To Top    #1

    In the Industry

    Join Date
    Aug 2014
    Location
    Tampa
    Posts
    37

    How unwise is it to dump a bag of cal-hypo powder in the inline feeder?

    Will 68% super shock clog it or make it brittle?
    IG concrete, 14'x24', 11k gal
    Paper cartridge filter, 1hp 2-speed pump soon
    [8] Heliocol panels harvested from a solar electric customer

  2. Back To Top    #2
    Mod Squad jblizzle's Avatar
    Join Date
    May 2010
    Location
    Tucson, AZ
    Posts
    37,389

    Re: How unwise is it to dump a bag of cal-hypo powder in the inline feeder?

    STOP!!! That is a VERY bad idea, it can explode!!!

    NEVER mix different types of chlorine!
    Jason, TFP Moderator
    18k IG pebblesheen pool, Hayward ProLogic P4 w/ T-15 SWG, Pentair 1HP 2-speed Superflo, Hayward 6020 DE filter
    500 sqft Heliocol solar panels, ThePoolCleaner, TF-100 test kit w/ SpeedStir
    Pool School + Test Kit + PoolMath = A TROUBLE FREE POOL
    If you found TFP helpful and we saved you money ... Become a TFP Supporter!

  3. Back To Top    #3

    In the Industry

    Join Date
    Aug 2014
    Location
    Tampa
    Posts
    37

    Re: How unwise is it to dump a bag of cal-hypo powder in the inline feeder?

    What other types of chlorine might be in there? The tablets, the liquid?

    I'm just wondering if, and don't think this is wise but am not quite sure why yet, if the inline feeder could be used for the powder (with no tabs) when I'm away for a few days b/c it's not stabilized and won't raise the CYA.
    IG concrete, 14'x24', 11k gal
    Paper cartridge filter, 1hp 2-speed pump soon
    [8] Heliocol panels harvested from a solar electric customer

  4. Back To Top    #4
    Mod Squad jblizzle's Avatar
    Join Date
    May 2010
    Location
    Tucson, AZ
    Posts
    37,389

    Re: How unwise is it to dump a bag of cal-hypo powder in the inline feeder?

    Perhaps a review of Pool School - How to Chlorinate Your Pool is advised ... there are many forms of chlorine.

    When the trace amounts of Trichlro (tablets) in the feeder mix with the powder you have which is Cal-hypo ... it explodes. There are videos.

    Ignoring the explosion ... the powder is not going to erode correctly in the feeder anyway.

    If you do not want to raise the CYA, then best bet is to use liquid. And if you are not going to be around for a few days, then you have to raise the FC extra high so it drifts down while you are gone and does not get too low for your CYA level. This is why TFP recommends adding chlorine daily and is geared toward the owners/DIY.
    Jason, TFP Moderator
    18k IG pebblesheen pool, Hayward ProLogic P4 w/ T-15 SWG, Pentair 1HP 2-speed Superflo, Hayward 6020 DE filter
    500 sqft Heliocol solar panels, ThePoolCleaner, TF-100 test kit w/ SpeedStir
    Pool School + Test Kit + PoolMath = A TROUBLE FREE POOL
    If you found TFP helpful and we saved you money ... Become a TFP Supporter!

  5. Back To Top    #5
    Richard320's Avatar
    Join Date
    Jan 2010
    Location
    San Dimas, CA (LA County)
    Posts
    18,768

    Re: How unwise is it to dump a bag of cal-hypo powder in the inline feeder?

    This is what happens when you mix Cal-hypo and Trichlor



    Read more from the folks who uploaded that video: ACHD - Pool Safety
    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!

  6. Back To Top    #6

    In the Industry

    Join Date
    Aug 2014
    Location
    Tampa
    Posts
    37

    Re: How unwise is it to dump a bag of cal-hypo powder in the inline feeder?

    Thank you, "the powder is not going to erode correctly in the feeder" is the answer for which I was looking, I certainly never intended to dump a bag in on top of tablets. Although I do now feel fortunate that my feeder didn't explode in the past as I'm sure at one time or another I've sprinkled a bag around the pool while there were tabs in the feeder - apparently I'm lucky to be alive!
    IG concrete, 14'x24', 11k gal
    Paper cartridge filter, 1hp 2-speed pump soon
    [8] Heliocol panels harvested from a solar electric customer

  7. Back To Top    #7
    Mod Squad Bama Rambler's Avatar
    Join Date
    Jun 2009
    Location
    SouthWest Alabama
    Posts
    22,347

    Re: How unwise is it to dump a bag of cal-hypo powder in the inline feeder?

    Once it's in the bulk pool water there is no danger of it exploding. It's just mixing the concentrated forms where the danger lies.
    Dave J. TFP Moderator
    24' x 52" Round AGP. 2hp/¼hp SPL Power-Flo 2-speed pump. 200sqft Waterway Cartridge Filter. 45MHP2(3GPD) Stenner Peristaltic Pump
    Pool School ----- Pool Math ----- TF-Test Kit

  8. Back To Top    #8

    In the Industry

    Join Date
    Aug 2014
    Location
    Tampa
    Posts
    37

    Re: How unwise is it to dump a bag of cal-hypo powder in the inline feeder?

    Yes, my comment was more than a little tongue in cheek in light of the hysteria my original question unintentionally provoked.

    Given the potential for such a violent reaction, perhaps a warning on Pool School - How to Chlorinate Your Pool is advised.
    IG concrete, 14'x24', 11k gal
    Paper cartridge filter, 1hp 2-speed pump soon
    [8] Heliocol panels harvested from a solar electric customer

  9. Back To Top    #9
    Mod Squad pooldv's Avatar
    Join Date
    Aug 2012
    Location
    DFW, TX
    Posts
    23,999

    Re: How unwise is it to dump a bag of cal-hypo powder in the inline feeder?

    Hysteria? Really? Tell it to these guys.
    FORWARDERLAW.COM : LIBRARY

    an excerpt

    It turns out that cal-hypo is some tiger when it comes to chemical instability and explosive potential. The court’s opinion goes through a scientific explanation (based on expert testimony) you almost need a chemistry degree to understand. Put simply, cal-hypo’s properties are subject to “thermal runaway,”

    and they didn't mix it with anything
    TFP Moderator
    If TFP helped you or saved you money - Become a TFP Supporter! <--Click here
    2012 build and pics, 20k gal gunite, black onyx pebblesheen, OK flagstone, IntellifoVS, cart filter w/Pleatco, IC40 SWG, Solartouch, 5 12'x4' solar panels, HP50HA heat pump, 8mil solar cover, borates, TF-100 test kit, SONOS, Doheny's Discovery Robot, hot tub on bleach

Posting Permissions

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