Become a TFP Supporter Pool Math Forum Rules Pool School
Results 1 to 11 of 11

Thread: How can I get a consistent scoop of the R-0870 DPD powder

  1. Back To Top    #1

    Join Date
    Aug 2011
    Location
    Northern California
    Posts
    15

    How can I get a consistent scoop of the R-0870 DPD powder

    Hello,

    I have read through many of the posts and I am in the middle of my first SLAM. I have all the supplies on hand and am testing regularly.

    My question is how can I get a consistent amount of the R-0870 powder for the Chlorine test?

    Some times I get a level scoop, others a heaping scoop., sometimes I get a level scoop but after i dump it in some sticks to the scoop.

    This seems to be the cause to some varied FC tests i am doing. I really need to get this figured out as I think tonight or tomorrow night my pool will likely pass the Overnight Test OFCT(?)
    Mike
    Northern Californio

    18,500 gallons
    Cartridge Filter
    Inground. Pebble Tech, Pentair Variable Speed Pump.

  2. Back To Top    #2

    Join Date
    Jun 2012
    Location
    Howell, NJ
    Posts
    977

    Re: How can I get a consistent scoop of the R-0870 DPD powde

    The amount of powder isn't critical. If you have a few undissolved granules after swirling, you have added enough powder.
    John
    7 year old ~13,500 gal 24' AGP with 1.5 hp Proline pump, 150 sqft Pleatco cartridge, filled with well water with pH of about 4.5.
    Wanda the Whale pool vacuum, home made heater, Taylor K-2006
    Cloudy Pool? 1) Order test kit. 2) Follow SLAM
    New to TFPC? Read Pool School a few times, then post questions. PoolMath will help with chemical additions.

  3. Back To Top    #3
    pwrstrk's Avatar
    Join Date
    Aug 2012
    Location
    Elverson Pa.
    Posts
    4,758

    Re: How can I get a consistent scoop of the R-0870 DPD powde

    You don't want too little powder. Too much doesn't matter. I use a heaping scoop. By the time I'm done with the test everything is usually dissolved.

    I can sometimes tell if the FC level is pretty high in my range by how pink the sample gets.


    Jeff
    24'x54" AG Morada RTR (by wilbar) 13'500 gal. Hayward Powerflo Matrix 1hp 2 speed. Hayward Perflex EC65 DE filter.

  4. Back To Top    #4

    Join Date
    Aug 2011
    Location
    Northern California
    Posts
    15

    Re: How can I get a consistent scoop of the R-0870 DPD powde

    Great, Thanks.

    I think sometimes I was not getting enought.

    Out to test my pool after an overnight SLAM and OFCT

    Mike
    Mike
    Northern Californio

    18,500 gallons
    Cartridge Filter
    Inground. Pebble Tech, Pentair Variable Speed Pump.

  5. Back To Top    #5
    Mod Squad jblizzle's Avatar
    Join Date
    May 2010
    Location
    Tucson, AZ
    Posts
    37,389

    Re: How can I get a consistent scoop of the R-0870 DPD powde

    If you are at shock level FC, you will certainly want to use extra powder.
    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!

  6. Back To Top    #6

    Join Date
    Aug 2011
    Location
    Northern California
    Posts
    15

    Re: How can I get a consistent scoop of the R-0870 DPD powde

    Great. I just used 2 heaping scoops and my FC looks about right from the OFCT.

    I am going to watch it today and hopefully it will drop to a more normal level and then I can get an accurate OFCT test, then start testing once a day to establish my chlorine consumption.

    This board is great, hopefully I can answers others questions like you have answered mine.

    What goes around, comes around,

    Mike

    ps. I bought the large refill kits from the TFT Test kit people and the Swirler device, great service, great prices.
    Mike
    Northern Californio

    18,500 gallons
    Cartridge Filter
    Inground. Pebble Tech, Pentair Variable Speed Pump.

  7. Back To Top    #7
    Mod Squad jblizzle's Avatar
    Join Date
    May 2010
    Location
    Tucson, AZ
    Posts
    37,389

    Re: How can I get a consistent scoop of the R-0870 DPD powde

    What is your CYA and FC level now? Usually the OCLT is done up closer to shock level and nit the lower maintenance levels.
    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!

  8. Back To Top    #8

    Join Date
    Aug 2011
    Location
    Northern California
    Posts
    15

    Re: How can I get a consistent scoop of the R-0870 DPD powde

    My CYA is at 50 (pool gets sun most of the day) and shock level is 22PPM. I am sitting at about 25ppm FC, right now. I have cleaned my filters (cartridge type) and the water looks better than the first day I filled it up.

    Am I good to go for an OFCT tonight? I think I will loose 3~5 PPM during the day today, but have yet to confirm that, and it is cloudy here in Northern CA.

    Appreciate the info!

    Mike
    Mike
    Northern Californio

    18,500 gallons
    Cartridge Filter
    Inground. Pebble Tech, Pentair Variable Speed Pump.

  9. Back To Top    #9
    Mod Squad jblizzle's Avatar
    Join Date
    May 2010
    Location
    Tucson, AZ
    Posts
    37,389

    Re: How can I get a consistent scoop of the R-0870 DPD powde

    Oh. Yeah you should be fine to try the OCLT. When you said you were letting it drop, I thought you were below shock level already.
    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!

  10. Back To Top    #10

    Join Date
    Aug 2011
    Location
    Northern California
    Posts
    15

    Re: How can I get a consistent scoop of the R-0870 DPD powde

    Thanks Jason.

    I have an 18.5k gallon IG PebbletTech pool, with a Pentair variable speed pump and Pentair cartridge filters. I use a solar cover as well.

    I will let you know how the OFCT goes,

    Mike
    Mike
    Northern Californio

    18,500 gallons
    Cartridge Filter
    Inground. Pebble Tech, Pentair Variable Speed Pump.

  11. Back To Top    #11

    In the Industry

    duraleigh's Avatar
    Join Date
    Apr 2007
    Location
    Sebring, Florida
    Posts
    30,084

    Re: How can I get a consistent scoop of the R-0870 DPD powde

    OCLT (overnight chlorine loss test)
    Dave S.
    42k vinyl and concrete pool, 1.5hp pump, 140gpm filter
    TFTestkits , PoolMath , 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
  •