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Thread: Stenner pump for acid -- dilute acid?

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    Join Date
    Oct 2010
    Houston, TX

    Stenner pump for acid -- dilute acid?

    If you use a Stenner pump to add acid everyday, are you supposed to dilute the acid in the tank? And what ratio of dilution should you do? I seem to recall reading the instructions of the Rolachem saying you have to dilute acid. Thanks!
    15k gunite pool. Intelliflo VF. Autopilot SWG.
    2k separate spa with waterfall (ie: pain in the rear maintaining a separate body of water). 2HP Hayward Tristar pump.

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    Join Date
    Mar 2007
    San Rafael, CA USA

    Re: Stenner pump for acid -- dilute acid?

    The Rola-ChemĀ® Pro Series Pump Manual says that for chlorine one can use undiluted 15% chlorinating liquid but that the Norprene pump tubing (black) is included for 32% maximum hydrochloric acid feed. Under pump size requirements, they indicate you should dilute the acid 4:1 to 9:1 and that if you dilute by 9:1 that the acid pump may be the same size as the chlorine pump. It looks like for typical pool sizes they recommend a 12 gallon per day (GPD) pump, but that's because they assume higher commercial demands and periodic bursts rather than continuous flow.
    16,000 gallon outdoor in-ground 16'x32' plaster pool; Pentair Intelliflo VF pump; Pentair IntelliTouch i9+3s control system; Jandy CL-340 square foot cartridge filter
    12 Fafco solar panels; Purex Triton PowerMax 250 natural gas heater (200,000 BTU/hr output); automatic electric pool safety cover; 4-wheel pressure-side "The Pool Cleaner"

  3. Back To Top    #3

    Join Date
    Apr 2011

    Re: Stenner pump for acid -- dilute acid?

    I use a solaxx acid pump and mix 1 to 1
    18000 gal Gunite free form
    Jandy 1 HP pump
    Jandy DEV 48 filter
    Raypak 400 heater
    Goldline Proligic SWCG
    Solaxx chemical feeder
    Dolphin Deluxe 4

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

    Re: Stenner pump for acid -- dilute acid?

    I've been diluting 3:1 without any problems over several years. Having some dilution is nice because it greatly cuts down on the fumes that can come out of the tank when you open it up.
    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

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