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Thread: Dosmatic Chlorinator??

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    Dosmatic Chlorinator??

    hi guys, First Post!!

    I just purchased a new home with a pool. found this site and decided i would try my hand at maintaining myself before paying the pool guy $150/month. So far this site and the BBB method are great except for the daily bleach additions...

    which brings me to my question. Has anyone tried using a dosmatic chemical injector to automate the bleach adding process?

    I have used one of these at work to mix bleach and water for equipment sanitation purposes. It worked great, mixed about 2 gallons a day for over a year before having to do any maintenance. I was thinking i would T off the water return line and install one of these guys, i could use a ball valve to control flow into the unit which in turn would control the amount of bleach. Anyway im still getting to know my pool but after i have a good feel for chlorine usage and necessary pump run time i will crunch some numbers to see if one of these guys is a feasible way to automate the chlorinating process.

    Any input is appreciated
    ~25k gallon IG plaster, Hayward RS1500 pump, Tagelus 60D sand filter, Taylor 2006 Test kit.

  2. Back To Top    #2

    Join Date
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    Re: Dosmatic Chlorinator??

    I use a stenner and it works great, makes you lazy
    12000g outdoor, inground gunite, pebbletec. Cartridge filter. 2.0 HP Jandy pump, taylor test kit
    399,000 BTU Raypak LPG Heater, stenner pump

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    Re: Dosmatic Chlorinator??

    Im all about automation, ill check that brand out.
    thanks
    ~25k gallon IG plaster, Hayward RS1500 pump, Tagelus 60D sand filter, Taylor 2006 Test kit.

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    Re: Dosmatic Chlorinator??

    I just recently added a Stenner to my system.

    My thread here on the addition.- added-a-stenner-pump-to-my-easytouch-done-updated-1st-post-t68908.html

    Also do a search here for more excellent help. All the threads helped me tremendously.

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    Mod Squad Bama Rambler's Avatar
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    Re: Dosmatic Chlorinator??

    It looks like it works on the same principal as the Chemilizer motor. If you decide to try one, let us know how it works out.

    I like the premise of it but not sure how it will work or how it will stand up in this service.
    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

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    Re: Dosmatic Chlorinator??

    the Stenner looks like a great option. What i like about the dosmatic is its simplicity. It is driven off the water flow so no extra electrical stuff to deal with (or repair). I know it will handle the bleach fine from my experience at work, We consistantly mixed 2 gallons of 5% bleach a day into water to sanitize equipment. after it was through the break in period and i got the adjustment dialed in i litterally didnt touch it for a year. Sanitation levels were spot on every morning. After a year or so a $5 wearable part went out, replaced in 10 minutes and we were back up. I have since left the department but the same injector has been running strong for about 4 years now.

    Again we have only been in the new house for a few weeks so still getting to know the pool. After i see some consistency in how much bleach and pump run time is necessary i will crunch the numbers to see if one of the dosmatic injectors is feasible. Im sure one will work out. I can use a ball valve to control the input and even dilute the bleach going into the injector if necessary, not ideal but still an option.

    Ok well it might be a month or two before i attempt automation but ill report back when i do.
    ~25k gallon IG plaster, Hayward RS1500 pump, Tagelus 60D sand filter, Taylor 2006 Test kit.

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    Mod Squad Bama Rambler's Avatar
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    Re: Dosmatic Chlorinator??

    Waiting a few months until you learn the personality of your pool is a very good thing. That will give you a handle on how much chlorine the pool uses and how much if any other things you need to regularly adjust.
    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

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    Re: Dosmatic Chlorinator??

    Quote Originally Posted by Bama Rambler
    Waiting a few months until you learn the personality of your pool is a very good thing. That will give you a handle on how much chlorine the pool uses and how much if any other things you need to regularly adjust.

    I completely agree, I have quite a bit of learning and work to do at this point. Automation is a few steps down the road. Currently my pool is green... been SLAMing for 3 days now, but it looks like it is starting to clear so hopefully im over the hill on this algae. I plan on keeping a daily log for at least a month to track chlorine usage so i can get a good idea of what it will take to keep me at a safe chlorine level. This SLAMing process is no fun but a good learning process for me.
    ~25k gallon IG plaster, Hayward RS1500 pump, Tagelus 60D sand filter, Taylor 2006 Test kit.

  9. Back To Top    #9
    linen's Avatar
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    Re: Dosmatic Chlorinator??

    Welcome to tfp, Topher55

    Post up some test results: specifically FC, CC, ph (if your pool is below 10 ppm FC), and cya...though CH, TA will also be useful in the long run.
    TFP Expert who uses Pool School and my TF100 test kit along with PoolMath for my: Round 11K gallon AGP with deep end, 20" sand filter, Matrix 1hp 2spd, 6 2ftX20ft solar panels (and solar cover!), Intex SWCG (copper bars disconnected) and a Rubadub hot tub (chlorine). The SLAM process is not finished until: 1. CC < 0.5 ppm, 2. An OCLT < 1.0 ppm and, 3. The water is crystal clear.

  10. Back To Top    #10

    Re: Dosmatic Chlorinator??

    well before i started the SLAM i was
    FC=13
    CC= <.5 (the 5 drops of reagent might have turned it the slightest bit red, not too sure but very minimal)
    PH= 7.5
    CYA = through the roof... seriously like 250+
    Tested both CH and TA both were good, forgot exact numbers.

    Not sure on my gallons, its a big goofy shape but all the sides are straight so easy enough to measure. a buddy of mine is a civil engineer he said if i measured he could model it in CAD to get me exact volume. But until then im kind of flying blind on how much chemical to add.

    Then i SLAMed, brought FC up to and am trying to hold 45, hope this is high enough given my CYA level???

    my first OCLT lost 5PPM FC, thats about 30 hrs after the initial SLAM. Second lost about 3ppm, and i think i am seeing that greyish color so hoping im over the hump. will continue OCLT until i pass.

    So ill get it blue again then guess doing a 50%+ drain is inevitable to get the CYA down. The CYA doesnt surprise me the previous owner said "i just keep the chlorine puck dispensor full, and leave it on MAX. Been doin it like this for years and never had a problem" so when i initially tested CYA i knew it was high but saw the black dot dissapear a little bit below the 100 mark so estimated 130 or so and figured FC was good at 15. then we got like 5 inches of rain, pool was full of leaves and FC down to 13. next morning GREEN.

    So thats my first few weeks of pool ownership
    ~25k gallon IG plaster, Hayward RS1500 pump, Tagelus 60D sand filter, Taylor 2006 Test kit.

  11. Back To Top    #11
    linen's Avatar
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    Re: Dosmatic Chlorinator??

    If your cya is that high, first thing to do is a drain/refill. If you cya is 250, they your FC SLAM level is 100 ppm FC ...we wouldn't recommend that however...lower your cya first.

    Get cya right first, then do the SLAM process.
    TFP Expert who uses Pool School and my TF100 test kit along with PoolMath for my: Round 11K gallon AGP with deep end, 20" sand filter, Matrix 1hp 2spd, 6 2ftX20ft solar panels (and solar cover!), Intex SWCG (copper bars disconnected) and a Rubadub hot tub (chlorine). The SLAM process is not finished until: 1. CC < 0.5 ppm, 2. An OCLT < 1.0 ppm and, 3. The water is crystal clear.

  12. Back To Top    #12
    pwrstrk's Avatar
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    Jeff
    24'x54" AG Morada RTR (by wilbar) 13'500 gal. Hayward Powerflo Matrix 1hp 2 speed. Hayward Perflex EC65 DE filter.

  13. Back To Top    #13

    Re: Dosmatic Chlorinator??

    Quote Originally Posted by linen
    If your cya is that high, first thing to do is a drain/refill. If you cya is 250, they your FC SLAM level is 100 ppm FC ...we wouldn't recommend that however...lower your cya first.

    Get cya right first, then do the SLAM process.
    Thanks, Looks like a drain/refill is inevitable then
    ~25k gallon IG plaster, Hayward RS1500 pump, Tagelus 60D sand filter, Taylor 2006 Test kit.

  14. Back To Top    #14
    foobert's Avatar
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    Re: Dosmatic Chlorinator??

    I rolled my own dosing system. Check the links in my sig
    ~john
    24.5K G, pebble, SuperFlo VS 1.5, 48sq DE filter, Hayward H250FDN, Autopilot RC-52, Poolvergnuegen & 3 daily swimmers in season.

  15. Back To Top    #15
    pwrstrk's Avatar
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    Re: Dosmatic Chlorinator??

    Yep it's the only way to lower it, no way around it. You'll be way better off when you get your CYA level in a good spot. It'll be a big step in the right direction for a trouble free pool.
    Jeff
    24'x54" AG Morada RTR (by wilbar) 13'500 gal. Hayward Powerflo Matrix 1hp 2 speed. Hayward Perflex EC65 DE filter.

  16. Back To Top    #16

    Re: Dosmatic Chlorinator??

    Well..... You were absolutely right. I fought the slam process with the 200+ CYA. Constant battle of gaining/loosing ground against the algae. That went on for about 10 days and 30 gallons of bleach. Gave up and pumped out 75% of the water bringing the CYA down to about 60. I say about because that black dot test kind of leaves me guessing. Anyway filled it back up adjusted ph and started slamming 4 days ago, passing everything except the water clarity criteria which at current rate I'm hoping to pass in a day or two. And be back to a TFP


    So moral of the story for anyone new like me. Don't try to SLAM with crazy high CYA levels. You will just waste time/money trying to avoid the inevitable....... Just bite the bullet and drain out what you need to get your CYA in order.


    ~25k gallon IG plaster, Hayward RS1500 pump, Tagelus 60D sand filter, Taylor 2006 Test kit.

  17. Back To Top    #17
    pwrstrk's Avatar
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    Re: Dosmatic Chlorinator??

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

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