Become a TFP Supporter Pool Math Forum Rules Pool School
Page 1 of 2 12 LastLast
Results 1 to 20 of 25

Thread: Cheap chlorine solution

  1. Back To Top    #1

    Join Date
    Jul 2013
    Location
    Philadelphia, PA
    Posts
    7

    Cheap chlorine solution

    Just wondering if anyone has tried this. Seems to be working for me and saving a ton of money. Got tired of spending so much money on chlorine, then I tried using bleach but found myself using a ton of it since bleach is pretty weak. So, I buy the 1lb bags of swimming pool shock (like the ones they sell in walmart). I split the powder into about 5 equal parts. Then I add each part to a gallon of water (I use leftover milk jugs, etc). Every week I grab a gallon off the shelf, shake it very well since some of the powder settles and add it to the pool. I've been doing this since I opened the pool in May. My pool has stayed within the chlorine limits and crystal clear since I opened it. As far as the weather, its been hot (80-95 degrees, lots of sun as well as more than average rainfall). So all in all I am spending anywhere from $3-$5 per 1 lb bag of shock and getting 5 gallons of chlorine out if it which last me on average a month. Just curious what you all think about this?
    25,000 gallon 18X36 Rectangle inground pool (3.5-7.5 ft),1.5 hp Hayward Superpump, Hayward High Rate Sand Filter Model # S-244T

  2. Back To Top    #2

    Re: Cheap chlorine solution

    You're using a form of chlorine that adds something else to you pool in addition to chlorine - either CYA or calcium - which we generally do not recommend.
    23,000 IG Plaster pool w/ spa, Pentair FNS Plus 48 DE Filter, Hayward RS1000 Main pump, Polaris booster pump, CPSC48 SWG, Legend pool sweep. Dallas, Texas, Full sun, Taylor K-2006

  3. Back To Top    #3
    Patrick_B's Avatar
    Join Date
    Jun 2011
    Location
    Midland TX
    Posts
    15,001

    Re: Cheap chlorine solution

    Welcome to the forum. What you will find is that this cost comparison has been addressed many, many, times. Without getting into that, the concern here is that those powdered shocks add either CYA or CH (Calcium Hardness) to your pool. Buildup of these can have negative consequences over a pretty short amount of time. This is why we don't recommend either of these as a single, permanent source of Chlorination.

    Read around on the forum, check out Pool School, and let us hear back from you. It is very helpful to put all the information about your pool in your sig as well.

    Again, welcome to TFP.
    TFP Moderator
    Essential Links:
    ABC's Of Pool Chemistry, Test Kits, SLAM Your Pool
    28K Gal IG FreeForm, CLI Quartz, Pentair 36"SF & VS Pump, Dolphin M5, Rheem

  4. Back To Top    #4
    BoDarville's Avatar
    Join Date
    Jun 2012
    Location
    DFW, Texas
    Posts
    3,840

    Re: Cheap chlorine solution

    Welcome to TFP

    Depending on the active ingredient in the powder you are using (most likely either dichlor or cal-hypo), you could be setting yourself up for problems later.

    If the powder is dichlor, it adds almost as much CYA as it does chlorine. Chlorine gets depleted daily as a normal part of the sanitation process. Therefore, you need to add chlorine daily during the swim season. CYA, however, accumulates as it does not get used up. More chlorine is needed at higher CYA levels for proper sanitation. If you are adding the same amount each time, FC levels will stay the same as the CYA continues to accumulate. Then, one day you will wake up to an algae bloom and have no idea why.

    If the powder is cal-hypo, it adds calcium along with the chlorine. If calcium gets too high, you run the risk of scaling. Like CYA, calcium continues to accumulate. So, with each addition of the powdered chlorine you are also adding calcium.

    The bottom line is you need to consider the side-effects of the chemicals you are using (specifically the cost to remedy those side-effects) and factor that into the cost. Bleach may or may not be the lowest cost alternative when looking solely at the price of the product. However, the main reason we recommend it is that it adds chlorine without adding anything undesirable to the pool that could cause problems later.
    Gold Supporter, TFP Lifetime Supporter, 26,680 gal Plaster IGP 3.5 - 10' depth / Attached Waterfall Spa, Manually Chlorinated, Triton Sand Filter, 1.5 HP * 1.1 SF = 1.65 SFHP 1-speed Pentair WhisperFlo WF-26 Pump, 400K BTU NG Teledyne Laars Series One Heater, Polaris 360, Test Kit Comparison, Chlorine/CYA Chart, SLAMing Your Pool, OCLT
    A good test kit is an investment, not an expense.

  5. Back To Top    #5

    Join Date
    Jul 2013
    Location
    Philadelphia, PA
    Posts
    7

    Re: Cheap chlorine solution

    Thanks for all the info. Didn't realize it added that extra stuff. Should I have noticed something by now with algae? It's been just over 2 months that I've been using this and haven't had any algae buildup or any type of scaling. I had the water tested from a reputable pool store and they said everything looked good except the stabilizer.
    25,000 gallon 18X36 Rectangle inground pool (3.5-7.5 ft),1.5 hp Hayward Superpump, Hayward High Rate Sand Filter Model # S-244T

  6. Back To Top    #6
    BoDarville's Avatar
    Join Date
    Jun 2012
    Location
    DFW, Texas
    Posts
    3,840

    Re: Cheap chlorine solution

    Quote Originally Posted by ninety5eclipz
    Should I have noticed something by now with algae?
    Depends on where you are located and you pool and whether it is a seasonal pool or open year-round. Around here, people who are using the "Pool Store Method" usually start to have problems that begin in in late-July or August. Their once a week shocking with dichlor combined with daily trichlor puck usage drive CYA up as they continue to maintain the pool-store accepted ideal FC of 3 ppm. Just a matter of time before an organic contaminant of some sort rears its ugly head.

    Two years ago, several people in my neighborhood had a battle with "red algae" (actually not an algae but a bacterium), and it all seemed to start in early August. Guess who was one of the few in my neighborhood who didn't have this problem?

    BTW, a couple of things to help us help you...
    • 1. Please add to your profile the state and nearest city in which you live. Your climate is important to the advice you receive. By doing this, it will appear in all your posts without you having to enter it each time.
      2. Suggest adding information about your pool and related equipment in your signature. By doing this, it will automatically appear in all your posts so you do not have to re-enter it each time. If you have a SWG, please include those letters in your signature so it stands out as the advice for SWG vs. non-SWG is often different.
    Here's how to do both of the above: Adding location to your profile and pool info to your signature.
    Gold Supporter, TFP Lifetime Supporter, 26,680 gal Plaster IGP 3.5 - 10' depth / Attached Waterfall Spa, Manually Chlorinated, Triton Sand Filter, 1.5 HP * 1.1 SF = 1.65 SFHP 1-speed Pentair WhisperFlo WF-26 Pump, 400K BTU NG Teledyne Laars Series One Heater, Polaris 360, Test Kit Comparison, Chlorine/CYA Chart, SLAMing Your Pool, OCLT
    A good test kit is an investment, not an expense.

  7. Back To Top    #7

    Join Date
    Aug 2010
    Location
    Dallas, TX
    Posts
    4,052

    Re: Cheap chlorine solution

    You say it all looks good except the stabilizer. Stabilizer = CYA. Is it too high or too low? Can you post the ingredients of what you've been adding? Can you post a full set of test results?
    Built in 1957 44,000 gallon in-ground, Wet Edge Primera Stone in Sky Blue, Intelliflo VF Pump, 600 lb. Pentair Triton II TR-100 Sand Filter, CircuPool RG 60 Plus SWG, TF-100 test kit
    If TFP has helped you, please click to SUPPORT TFP!

  8. Back To Top    #8

    Join Date
    Jul 2013
    Location
    Philadelphia, PA
    Posts
    7

    Re: Cheap chlorine solution

    Stabilizer was too high. It wasn't dangerously high just a little elevated. I'm guessing because of the CYA from the shock plus the fact that I was adding stabilizer separately?! I've been putting in about 8 oz of Aqua Chem 3X concentrated algaecide per week, about 1/4 cup of Aqua Chem shock treatment powder mixed in a gallon of water per week, occasional baking soda to adjust Alkalinity. I also have a in-line chlorine feeder that I put about (3) 3inch chlorine tablets in. If the chlorine level drop between the week I add the shock mixture I just turn the chlorinator on to bring the level back up. I don't still have the test results that were given to me last week. I usually just use the test strips. I think I have everything in my sig block now. I am from the Philly area.
    25,000 gallon 18X36 Rectangle inground pool (3.5-7.5 ft),1.5 hp Hayward Superpump, Hayward High Rate Sand Filter Model # S-244T

  9. Back To Top    #9

    Join Date
    Aug 2010
    Location
    Dallas, TX
    Posts
    4,052

    Re: Cheap chlorine solution

    Your routine is putting you at hazard of having your pool's balance WAY off.
    Built in 1957 44,000 gallon in-ground, Wet Edge Primera Stone in Sky Blue, Intelliflo VF Pump, 600 lb. Pentair Triton II TR-100 Sand Filter, CircuPool RG 60 Plus SWG, TF-100 test kit
    If TFP has helped you, please click to SUPPORT TFP!

  10. Back To Top    #10

    Join Date
    Jul 2013
    Location
    Philadelphia, PA
    Posts
    7

    Re: Cheap chlorine solution

    Pic from today
    Attached Images Attached Images
    25,000 gallon 18X36 Rectangle inground pool (3.5-7.5 ft),1.5 hp Hayward Superpump, Hayward High Rate Sand Filter Model # S-244T

  11. Back To Top    #11

    Join Date
    Jul 2013
    Location
    Philadelphia, PA
    Posts
    7

    Re: Cheap chlorine solution

    Found the test results:
    FC 2.7, PH 7.3, ALK 93, TA 75, CH 320, CYA 91
    25,000 gallon 18X36 Rectangle inground pool (3.5-7.5 ft),1.5 hp Hayward Superpump, Hayward High Rate Sand Filter Model # S-244T

  12. Back To Top    #12

    Join Date
    Aug 2010
    Location
    Dallas, TX
    Posts
    4,052

    Re: Cheap chlorine solution

    As we expected, the balance is off. FC of 2.7 is too low for a CYA of 91 - if those numbers are accurate. Your minimum FC should be at 7, with a total range of 7-12.

    Using tablets has caused your CYA to be too high. The only way to lower CYA is to partially drain the pool and refill with new water.
    Built in 1957 44,000 gallon in-ground, Wet Edge Primera Stone in Sky Blue, Intelliflo VF Pump, 600 lb. Pentair Triton II TR-100 Sand Filter, CircuPool RG 60 Plus SWG, TF-100 test kit
    If TFP has helped you, please click to SUPPORT TFP!

  13. Back To Top    #13
    Isaac-1's Avatar
    Join Date
    May 2010
    Location
    SW Louisiana
    Posts
    6,711

    Re: Cheap chlorine solution

    You should read the pool school link in the upper right to get an understanding of pool chemistry and how with numbers like yours it is likely to all come tumbling down before long.
    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~

  14. Back To Top    #14
    techguy's Avatar
    Join Date
    Jul 2010
    Location
    Antelope, CA
    Posts
    2,687

    Re: Cheap chlorine solution

    The odd thing is that your pool looks great... but your CYA is high, your FC is low and adding more dichlor (shock) is only going to make your CYA worse and may not be enough FC to keep the algae away. This is just one pair of factors... see the PoolSchool article about the Chlorine CYA relationship. FC is your simple most important factor in my mind.
    -- Guy --
    10K gallons in 21' Round 52 inch wall Aqualeader AG, Hayward Power Flow LX 1.5 HP pump motor, Hayward Perflex EC50AC DE filter w/Cellulose, Wide mouth skimmer, 2013 new Diver Dan (craigslist) to replace the faded old Hayward AquaBug. TF-100

  15. Back To Top    #15

    Join Date
    Jul 2013
    Location
    Philadelphia, PA
    Posts
    7

    Re: Cheap chlorine solution

    Thanks for all the help. Think I'm gonna drain a bit and add some fresh water to try to bring the cya down, then ill retest and see where I'm at.
    25,000 gallon 18X36 Rectangle inground pool (3.5-7.5 ft),1.5 hp Hayward Superpump, Hayward High Rate Sand Filter Model # S-244T

  16. Back To Top    #16
    Isaac-1's Avatar
    Join Date
    May 2010
    Location
    SW Louisiana
    Posts
    6,711

    Re: Cheap chlorine solution

    Your signature does not say, but it looks like you have a vinyl liner pool, in that case you never want to let the bottom of the shallow end have less than about a foot of water over it, getting lower than that chances having wrinkles form on the bottom.. With your current CYA range you will need to drain about 50% of your water to get into the 40-50 ppm suggested range, this may require doing multiple partial drain / refill cycles.
    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~

  17. Back To Top    #17

    Join Date
    Jul 2010
    Location
    Philly
    Posts
    332

    Re: Cheap chlorine solution

    Quote Originally Posted by ninety5eclipz
    Thanks for all the help. Think I'm gonna drain a bit and add some fresh water to try to bring the cya down, then ill retest and see where I'm at.
    Good idea. Another good idea would be to get a quality test kit. With a good test kit you'd be able to do some partial drains and still maintain the great looking water you have in there now. If we get rain like we've had the last few years in the beginning and end of season and draining for winterizing, you'll be down to a better number with no disruption in swim time.

    Now's the time to switch to liquid Chlorine. Aldis and my local pool store are the cheapest I've found. About 23 cents per ounce of pure Chlorine for both. Any price increase in Chlorination will be offset by not needing any Baking Soda and algaecide.
    Bill
    18'X4' 7600 Gal AG
    3/4 HP Pentair Pump
    Hayward S166T 100 lb sand filter

  18. Back To Top    #18

    Join Date
    Jul 2013
    Location
    Philadelphia, PA
    Posts
    7

    Re: Cheap chlorine solution

    Yeggim.......Aldis sells chlorine? I'm actually in SJ. I have an Aldis right down the street but they don't sell it here.
    25,000 gallon 18X36 Rectangle inground pool (3.5-7.5 ft),1.5 hp Hayward Superpump, Hayward High Rate Sand Filter Model # S-244T

  19. Back To Top    #19

    Re: Cheap chlorine solution

    it's just bleach....
    23,000 IG Plaster pool w/ spa, Pentair FNS Plus 48 DE Filter, Hayward RS1000 Main pump, Polaris booster pump, CPSC48 SWG, Legend pool sweep. Dallas, Texas, Full sun, Taylor K-2006

  20. Back To Top    #20

    Join Date
    Jul 2010
    Location
    Philly
    Posts
    332

    Re: Cheap chlorine solution

    Quote Originally Posted by ninety5eclipz
    Yeggim.......Aldis sells chlorine? I'm actually in SJ. I have an Aldis right down the street but they don't sell it here.
    Like rdhetrick says, it's bleach. Unscented plain bleach is just a weaker concentration of pool store liquid Chlorine.

    A quick calculation will let you compare the cost of actual Chlorine content. Price/(ounces x strength)

    Aldis bleach cost me $1.38 for 96 ounces of 6% bleach.
    $1.38/(96 ounces X .06)=0.239 cents or 24 cents an ounce of pure Chlorine.

    5 gallon of 12.5% bleach from the pool store costs me $18.60
    $18.60/(640 ounces X .125)=0.2325 or 23 cents an ounce
    Bill
    18'X4' 7600 Gal AG
    3/4 HP Pentair Pump
    Hayward S166T 100 lb sand filter

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
  •