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Thread: Acid Injection Placement

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    Acid Injection Placement

    Hi, I am going to installl a stenner pump to dose MA and wanted some feed back as to the best location for the emiter. I know it should be after the pump and heater, but what about the chlorine cell? I was thinking if I put it before the cell then the acid would help to keep it clean but dont know if it would damage it over a long period of time. I do plan on diluting the acid 4:1. Thanks
    Michiele
    Newbie pool owner
    25,000 gallon inground, vinyl lined pool, sand filter

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    Mod Squad Bama Rambler's Avatar
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    Re: Acid Injection Placement

    Which pump are you going with?
    How quickly are you planning on adding the acid?

    If you're injecting it slowly over a pretty long period of time it would probably be ok to put it before the cell. Having said that, I'd put it past the discharge of the cell just to be absolutely sure it never created a problem.
    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
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    JasonLion's Avatar
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    Re: Acid Injection Placement

    I would put the acid injection after the heater and before the SWG cell. That is the approach the AutoPilot Total Control system recommends. This approach will help reduce scaling in the SWG cell.
    19K gal, vinyl, 1/2 HP WhisperFlo pump, 200 sqft cartridge filter, AutoPilot Digital SWG, Dolphin Dynamic cleaning robot
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    Re: Acid Injection Placement

    I have a stenner pump that was used for chlorine injection in a well and has a 17gpd rate which is slow and with diluting the acid I figure it would be ok.
    Michiele
    Newbie pool owner
    25,000 gallon inground, vinyl lined pool, sand filter

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    Mod Squad Bama Rambler's Avatar
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    Re: Acid Injection Placement

    Is the pump going to be on a timer by itself?

    17gpd is a lot of acid. Hopefully it's an adjustable model. That'll get you down to .8 gals per day and if you put it on a timer you should be able to dial in what you need. If it's too big, you can change the tube to a #1 tube and it'll be a 5gpd model.
    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: Acid Injection Placement

    I was wondering about different pump tubes. My plan is to have it on a seperate timer tied to the pool pump operation. My pool needs about a quart of acid a week, so I may need to change to the #1 tubes and adjust the dilution ratio since the pump run time would be fast with the 17gpd rate.
    Michiele
    Newbie pool owner
    25,000 gallon inground, vinyl lined pool, sand filter

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    susa's Avatar
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    Re: Acid Injection Placement

    Mine is located after pump, before filter and before IC40 Cell. Since it injects very tiny amounts and only based on sensor readings, there is never an issue. It also is shut off automatically once pump drops below 150 watts. This allows me to run ultralow speeds without the IntelliChlor or Simpool being active, just for filtration.

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