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Thread: Salt Cell Size for Fiberglass Pool

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    Salt Cell Size for Fiberglass Pool

    I have a small 9000 gallon in ground fiberglass pool. It is currently set up with a hayward sand filter, a 2-speed pump, and a chlorine tablet feeder. I have many friends with saltwater pools and love the feel of the water and ease of maintenace. I don't want to get in a debate over SWG vs chlorine.

    I run the pump on low speed for long runs of at least 12-14 hours a day in the summer.

    I want to use the hayward Aquarite system, but am unsure of what size cell to get. They come in 15k, 25k, and 40k sizes. I am located in south texas where summer temps average in the low 90s. The pool is in full sun and will be open year round. Any thoughts on sizing? The pricing I am looking at is as follows:

    Complete systems:

    15k $675
    25k $825
    40k $975

    Replacement cells:

    15k $215
    25k $350
    40k $450

    Thanks for your help!
    Inground Lazy-L 18X40 (Vinyl Liner)
    Hayward 1 HP SP1600
    Pentair FNS-36 DE filter

  2. Back To Top    #2
    JasonLion's Avatar
    Join Date
    May 2007
    Silver Spring, MD

    Re: Salt Cell Size for Fiberglass Pool

    Either the 15k cell or the 25k cell will work well. The 40k cell will work, but it will be difficult to get it calibrated correctly because the adjustment steps become very large when the cell is way oversized. I don't recommend using a cell that is more than 3 times oversized.

    The 25k cell should work out to be less expensive in the long run, though, given the prices you list, there isn't as much advantage to going with the 25k cell over the 15k cell as there usually is.
    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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