Become a TFP Supporter Pool Math Forum Rules Pool School
Page 1 of 2 12 LastLast
Results 1 to 20 of 27

Thread: How to get CH down.. without draining

  1. Back To Top    #1

    Join Date
    Feb 2014
    Location
    wisconsin
    Posts
    77

    How to get CH down.. without draining

    Hi. new pool owner. need to update my sig cause pool is in and filled!

    anyways. getting started here. I have filled the pool with two tankers (6500 gallons each of water) and filled rest will well water.22000 gallon pool

    The well water is rusty but i hooked up an inline water filter to the hose and it still made the water murky (cant see the bottom)

    my TFT 100 test results.

    FC-0
    PH 7.5
    CH 500
    TA-300
    CYA- 0


    Pool Math is telling me to add 91 oz of 12% bleach

    196 oz of MA to bring down the PH and therefore TA ( AM I READING THIS CORRECT?!?)
    and to replace 60% of water... with CH of 0... that is going to be an issue. budget is broke and replacing that amount of water would put me on the couch for a couple weeks

    and to add like 13 lbs of stabilizer CYA to get to 70... wow really that much?!?!

    also to add 644 lbs of salt to get to intellichlor 3500 ppm level ( im waiting till FC is at 3-4 to do this) or can i add it right now and get intellchlor running?


    HELP ME GET GOING OH WISE ONES!
    18x36 Inground 22000 gal Vinyl Lined sport pool \ P Pentair Intelliflo VS pump, Sta-rite 400SQ FT Cartridge filter, Pentair MasterTemp 250K HD Heater, Pentair SunTouch Control System, Pentair IC40 SWG, 2 Pentair Intellibrite 5G Lights, Pentair Intellibrite lite Controller, Pentair Kreepy Krauly 820 robot.

  2. Back To Top    #2

    Join Date
    Jan 2013
    Location
    Houston, TX
    Posts
    1,079

    Re: How to get CH down.. without draining

    don't sweat the CH ... especially since you have a vinyl pool. (use rainwater catchment to bring it down over time - no CH in rain)

    Add the bleach - make note of your CL 30 min after you add the bleach, this will help you to get a closer estimate of the actual size of your pool (can vary based on actual bleach strength).

    PH of 7.5 is good - no need to add acid for PH purposes ... we will get to TA and acid in a minute.

    Stabilizer ... yes that much. In steps ... 1/3 rd step increments with a week between additions. You do not want to overshoot.

    Salt - I cant speak to this one ... I'm on an injector, I seem to recall get the salt in and mixed, use bleach to get up to level then turn on the intellichlor after 24 or 48 hours. not 100% positive...

    OK ... TA - aeration reduces TA, as a side effect it raises PH. Enjoy the pool and manage this one over time. Do some searches for aeration and TA and you will find some good info. Just be aware in the mean time that your PH may swing a bit more than normal. From what I understand it's not as critical with a vinyl pool as the masonry isn't playing with the PH. You may find that the TA is fine.

    You may find that you have some metal or mineral issues to deal with from the well water ...
    TFP Moderator Chris V. ~16K Pool & Spa, 48NSF DE, IG Plaster Circa 2000, Intermatic PE653, Challenger pump with a 2 speed B2984, 20gal stenner chlorine injection, Houston, TX
    One cannot follow Islam and Christianity at the same time, nor can one follow pool store methods and TFP at the same time.
    Pool School -- Pool Math -- TF-Test Kit

  3. Back To Top    #3

    Join Date
    Feb 2014
    Location
    wisconsin
    Posts
    77

    Re: How to get CH down.. without draining

    thank you for the reply! seems to be right on par with my searches!
    18x36 Inground 22000 gal Vinyl Lined sport pool \ P Pentair Intelliflo VS pump, Sta-rite 400SQ FT Cartridge filter, Pentair MasterTemp 250K HD Heater, Pentair SunTouch Control System, Pentair IC40 SWG, 2 Pentair Intellibrite 5G Lights, Pentair Intellibrite lite Controller, Pentair Kreepy Krauly 820 robot.

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

    Re: How to get CH down.. without draining

    Your priorities right at the moment are to get the PH down to around 7.0-7.2 and start adding CYA.

    Because your TA is so high, it will take a great deal of acid to lower the PH. Still, the calculation isn't always perfect, so it is best to add about half the amount it says, wait 30 minutes with the pump running for it to mix in, test the PH again, and continue adjusting from there. That will help you get a much better sense of how much acid you really need. Also, as the TA comes down it will take less acid to change the PH.

    Without any CYA in the water you will lose all of your chlorine to sunlight very quickly. Start adding CYA, but again do it in a couple of steps. It is easy to raise CYA, but difficult to lower it.

    Lower priority, but work working on the salt at around the same time. Remember that your salt level almost never starts at zero. With a fresh fill it will be fairly low, but a pool that has been in use for a while will tend to have a significant salt level.

    CH at 500 can be managed, allowing you to postpone the water replacement, but it is a lot of work. The crucial thing is to maintain control over your PH and never let PH go above 7.8. With high TA the PH will want to go up, so you need to keep on top of it at least until you get the TA down a bit.

    Add chlorine manually after sunset, about 2 ppm per day until it has been 24 hours since you started adding CYA. After that you can switch to aiming for the FC level that corresponds with your target CYA level.
    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
    Feb 2014
    Location
    wisconsin
    Posts
    77

    Re: How to get CH down.. without draining

    ok add acid in half batch.. cya in increments.. 1 lb a day for 12 days? test every other day??!? liquid chlorine at nighttime and salt added when im bored?
    18x36 Inground 22000 gal Vinyl Lined sport pool \ P Pentair Intelliflo VS pump, Sta-rite 400SQ FT Cartridge filter, Pentair MasterTemp 250K HD Heater, Pentair SunTouch Control System, Pentair IC40 SWG, 2 Pentair Intellibrite 5G Lights, Pentair Intellibrite lite Controller, Pentair Kreepy Krauly 820 robot.

  6. Back To Top    #6
    Isaac-1's Avatar
    Join Date
    May 2010
    Location
    SW Louisiana
    Posts
    6,711

    Re: How to get CH down.. without draining

    CYA is acidic so it will also tend to drive pH down a bit, use the sock method to add CYA since it dissolves VERY slowly on its own. (put is in an old sock and hang it in front of a return fitting so it does not touch the side of the pool) you can kneed it from time to time to speed things along) Note also it can take a week to show up on the test, so don't get in a hurry to add more.

    Ike
    Indoor 20x40 35,000 gallon vinyl pool with 1.5 HP 2 speed Jandy FloPro pump, Hayward EC75 Perflex DE filter, 11 4x12 Techno-Solis solar panels w/ Aquasolar controller, Aquabot Turbo T Robot Cleaner. Also LMI metering chlorine dispenser pump and HotSpring Jetsetter
    I use and endorse TFtestKits TF-100 from http://tftestkits.net
    ~Remember TFP counts on your donations to keep this site ad free~

  7. Back To Top    #7

    Join Date
    Feb 2014
    Location
    wisconsin
    Posts
    77

    Re: How to get CH down.. without draining

    ok did as above. is there anything else i can do to help get this water looking better? its so discerning after spending so much water to have a glorified pond!


    Last edited by Butterfly; 04-27-2014 at 12:03 PM. Reason: Added photobucket IMG linkto show pic
    18x36 Inground 22000 gal Vinyl Lined sport pool \ P Pentair Intelliflo VS pump, Sta-rite 400SQ FT Cartridge filter, Pentair MasterTemp 250K HD Heater, Pentair SunTouch Control System, Pentair IC40 SWG, 2 Pentair Intellibrite 5G Lights, Pentair Intellibrite lite Controller, Pentair Kreepy Krauly 820 robot.

  8. Back To Top    #8

    Join Date
    Jan 2013
    Location
    Houston, TX
    Posts
    1,079

    Re: How to get CH down.. without draining

    That looks like an algae bloom to me. Have you checked CC? May be time to SLAM
    TFP Moderator Chris V. ~16K Pool & Spa, 48NSF DE, IG Plaster Circa 2000, Intermatic PE653, Challenger pump with a 2 speed B2984, 20gal stenner chlorine injection, Houston, TX
    One cannot follow Islam and Christianity at the same time, nor can one follow pool store methods and TFP at the same time.
    Pool School -- Pool Math -- TF-Test Kit

  9. Back To Top    #9
    Mod Squad zea3's Avatar
    Join Date
    Jul 2009
    Location
    Houston, Texas
    Posts
    9,200

    Re: How to get CH down.. without draining

    Have you had the water tested for iron or copper? Since you used well water for part of the fill you will want to know if there are any metals in the water. Keep the pump running 24/7 and clean the filter when pressure rise is 20% above clean pressure. Otherwise, keep doing what you are doing and have some POP (pool owner patience). It will take a little time for the water to clear.
    TFP Moderator
    Helpful links: TF Test Kits,TFP Pool School, PoolMath
    Vogue 21' round AG, Pentair 1 hp 2 speed pump, 36 sq ft DE filter, Hayward S180T 150# sand filter, Houston, Texas
    Love TFP? Become a
    TFP Supporter!

  10. Back To Top    #10
    ComputerGuyInNOLA's Avatar
    Join Date
    Oct 2012
    Location
    Mandeville, Louisiana
    Posts
    602

    Re: How to get CH down.. without draining

    As Karmabiker stated, don't run the intellichlor until your salt has been added and mixed for 24 hours. I know jandy says it will damage their SWCG.
    Gunite/Plaster pool at 13k gallons. All Jandy with CL340 series cartridge filter, 1.5 HP Jandy Stealth pump. Jandy 1400 SWCG and PDA4 controller. Dual waterfalls. Polaris 280. Pool installed August 2012. Southern Louisiana. And lets not forget my trusty TF100 test kit!

  11. Back To Top    #11

    Join Date
    Feb 2014
    Location
    wisconsin
    Posts
    77

    Re: How to get CH down.. without draining

    POP... lol im trying.

    - - - Updated - - -

    ive got 400lbs of salt diluted. gonna add the rest tomorrow after i test.. 2 lbs of cya diluted through a sock. and gonna add more later. PB said I should add all 6 bottles of 12% LC right now... not sure, what you guys think.. pump is running 2400 rpm cartridge filter is at 15% and holding. ZEA i know for sure there is iron in the water, lots! i have a whole house water filter retro fitted to garden hose and it was brand new... now the filter looks llike it was rolled around in the mud. only one inch of well water left to put in.
    Last edited by Suprfly; 04-26-2014 at 03:33 PM. Reason: cause im not good at grammar!
    18x36 Inground 22000 gal Vinyl Lined sport pool \ P Pentair Intelliflo VS pump, Sta-rite 400SQ FT Cartridge filter, Pentair MasterTemp 250K HD Heater, Pentair SunTouch Control System, Pentair IC40 SWG, 2 Pentair Intellibrite 5G Lights, Pentair Intellibrite lite Controller, Pentair Kreepy Krauly 820 robot.

  12. Back To Top    #12
    Isaac-1's Avatar
    Join Date
    May 2010
    Location
    SW Louisiana
    Posts
    6,711

    Re: How to get CH down.. without draining

    That is insanely too much liquid chlorine at once, WE NEVER teach massive doses like that as it can damage pools and equipment. You do need to get some chlorine in there though if there is not any, and may need to add more often if there is something consuming it. Given your low initial CYA level I would bring it up to an FC of 10 and hold it there this should take about 2 gallons of 12% bleach / liquid chlorine initially, then add more after testing every few hours. (more frequently to begin with)

    Ike

    p.s. see the SLAM process in pool school

    Also how long has this pool been filled with no chlorine in it?

    Also if it gets more green after adding chlorine chances are it is iron
    Indoor 20x40 35,000 gallon vinyl pool with 1.5 HP 2 speed Jandy FloPro pump, Hayward EC75 Perflex DE filter, 11 4x12 Techno-Solis solar panels w/ Aquasolar controller, Aquabot Turbo T Robot Cleaner. Also LMI metering chlorine dispenser pump and HotSpring Jetsetter
    I use and endorse TFtestKits TF-100 from http://tftestkits.net
    ~Remember TFP counts on your donations to keep this site ad free~

  13. Back To Top    #13

    Join Date
    Feb 2014
    Location
    wisconsin
    Posts
    77

    Re: How to get CH down.. without draining

    its only been one day since the liner was put in and filled. water seems to be getting a little bit clearer. its definitely not getting any worse.
    18x36 Inground 22000 gal Vinyl Lined sport pool \ P Pentair Intelliflo VS pump, Sta-rite 400SQ FT Cartridge filter, Pentair MasterTemp 250K HD Heater, Pentair SunTouch Control System, Pentair IC40 SWG, 2 Pentair Intellibrite 5G Lights, Pentair Intellibrite lite Controller, Pentair Kreepy Krauly 820 robot.

  14. Back To Top    #14
    Mod Squad zea3's Avatar
    Join Date
    Jul 2009
    Location
    Houston, Texas
    Posts
    9,200

    Re: How to get CH down.. without draining

    You will probably need to add sequestrant for the iron that makes it past the filter.
    TFP Moderator
    Helpful links: TF Test Kits,TFP Pool School, PoolMath
    Vogue 21' round AG, Pentair 1 hp 2 speed pump, 36 sq ft DE filter, Hayward S180T 150# sand filter, Houston, Texas
    Love TFP? Become a
    TFP Supporter!

  15. Back To Top    #15

    Join Date
    Feb 2014
    Location
    wisconsin
    Posts
    77

    Re: How to get CH down.. without draining

    ok ive been looking into that. Do i use the Magic Jack purple or the blue? the purple says its for swg.. but the blue stuff says for plaster BUT acutally says on the bottle it removes iron?! also there is the magenta!?!?!

    - - - Updated - - -

    by the way the help has been invaluable. thank you much. Id probably try to drown myself in my own pool if it wernt for this forum! thanks much!
    18x36 Inground 22000 gal Vinyl Lined sport pool \ P Pentair Intelliflo VS pump, Sta-rite 400SQ FT Cartridge filter, Pentair MasterTemp 250K HD Heater, Pentair SunTouch Control System, Pentair IC40 SWG, 2 Pentair Intellibrite 5G Lights, Pentair Intellibrite lite Controller, Pentair Kreepy Krauly 820 robot.

  16. Back To Top    #16

    Join Date
    Feb 2014
    Location
    wisconsin
    Posts
    77

    Re: How to get CH down.. without draining

    well this morning know you guys may not get as excited as i am but i can see bottom and can see the main drains!.. I had paper towel in the skimmer basket and it caught alot of the brown stuff/rust. at this rate should be pretty clear by tomorrow! woot woot! water test in a couple hours!
    18x36 Inground 22000 gal Vinyl Lined sport pool \ P Pentair Intelliflo VS pump, Sta-rite 400SQ FT Cartridge filter, Pentair MasterTemp 250K HD Heater, Pentair SunTouch Control System, Pentair IC40 SWG, 2 Pentair Intellibrite 5G Lights, Pentair Intellibrite lite Controller, Pentair Kreepy Krauly 820 robot.

  17. Back To Top    #17
    Mod Squad zea3's Avatar
    Join Date
    Jul 2009
    Location
    Houston, Texas
    Posts
    9,200

    Re: How to get CH down.. without draining

    Progress is good! You should probably go with the purple stuff, but pink stuff should work also if thats all you can find.
    TFP Moderator
    Helpful links: TF Test Kits,TFP Pool School, PoolMath
    Vogue 21' round AG, Pentair 1 hp 2 speed pump, 36 sq ft DE filter, Hayward S180T 150# sand filter, Houston, Texas
    Love TFP? Become a
    TFP Supporter!

  18. Back To Top    #18
    Madison Mike's Avatar
    Join Date
    Apr 2014
    Location
    Columbus, WI
    Posts
    31

    Re: How to get CH down.. without draining

    Quote Originally Posted by karmabiker View Post

    OK ... TA - aeration reduces TA, as a side effect it raises PH. Enjoy the pool and manage this one over time. Do some searches for aeration and TA and you will find some good info.
    I guess I don't agree with this. Acid reduces TA, not aeration. Aeration increases pH, so you can add more acid to lower your TA to your target.
    Jacuzzi J375 Spa, 415 gallons, Bromine Sanitizer

  19. Back To Top    #19

    Join Date
    Jan 2013
    Location
    Houston, TX
    Posts
    1,079

    Re: How to get CH down.. without draining

    Quote Originally Posted by Madison Mike View Post
    I guess I don't agree with this. Acid reduces TA, not aeration. Aeration increases pH, so you can add more acid to lower your TA to your target.
    Mike
    100% correct. I needed more coffee before posting that. Thank you for the correction
    TFP Moderator Chris V. ~16K Pool & Spa, 48NSF DE, IG Plaster Circa 2000, Intermatic PE653, Challenger pump with a 2 speed B2984, 20gal stenner chlorine injection, Houston, TX
    One cannot follow Islam and Christianity at the same time, nor can one follow pool store methods and TFP at the same time.
    Pool School -- Pool Math -- TF-Test Kit

  20. Back To Top    #20

    In the Industry

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

    Re: How to get CH down.. without draining

    pH up - 20 mule team borax

    pH down - Muriatic acid

    TA up - Baking soda

    TA down - aeration and acid...it's process found in Pool School that you must read to make TA change quickly and permanently
    Dave S.
    42k vinyl and concrete pool, 1.5hp pump, 140gpm filter
    TFTestkits , PoolMath , Pool School

Page 1 of 2 12 LastLast

Posting Permissions

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