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Thread: Strategy for maintaining an infrequently used spa

  1. Back To Top    #1

    Join Date
    Jun 2014
    Manteo, NC

    Strategy for maintaining an infrequently used spa

    Hi, I'm new to the forum and could use use some help figuring out how to best deal with a spa we have at a vacation home. The problem is we often have gaps of a month or so when we are not there to maintain the spa. When we are there, it's generally just my wife and me, so the usage is modest. We usually stay a few days or a week each visit. Is there any reasonable maintenance strategy that would be workable? One option is to drain the spa each time we leave, but I'm concerned about the water left in the pipes (more on that below). Another option is to bite the bullet and hire a professional pool company; costly for the amount of use we'll get from the spa. Is there any way we could leave the spa filled without having a mess when we return?

    On the subject of residual water in the pipes, last year, we had the spa professionally winterized. I just finished hooking everything back up and filling it. When I started it up I saw some jellyfish like material with black spots shoot out the jets. I presume that is bacterial slime. Argh. After some reading on the forum, I dosed it with Clorox to 50 ppm, and let that circulate for 24 hours. The water looks clear. Next, I plan to raise the dosage to 100 ppm and run it for another hour before draining, cleaning the filter, and refilling. Anything other suggestions for dealing with residual water in the pipes?

  2. Back To Top    #2
    mas985's Avatar
    Join Date
    May 2007
    Pleasanton, CA

    Re: Strategy for maintaining an infrequently used spa

    What about running the pump on a timer with an automatic chlorine feed system?
    Hydraulics 101; Pump Ed 101; Pump/Pool Spreadsheets; Pump Run Time Study; DIY Acid Dosing; DIY Cover Roller
    18'x36' 20k plaster, MaxFlo SP2303VSP, Aqualogic PS8 SWCG, 420 sq-ft Cartridge, Solar, 6 jet spa, 1 HP jet pump, 400k BTU NG Heater

  3. Back To Top    #3

    Join Date
    Mar 2007
    San Rafael, CA USA

    Re: Strategy for maintaining an infrequently used spa

    You can also consider the ControlOMatic TechniChlor, but you have to carefully determine chlorine usage/consumption when the water temperature has stabilized (you'd normally not heat it so it would just stay warm from the pump). Going a week should be no problem, maybe even two weeks, but a month starts to get risky with any of these automated approaches because if the chlorine usage/consumption changes then the chlorine level will change. If you get things pretty stable, it shouldn't be a disaster, but you definitely need to get to that stable point otherwise you can drastically overshoot or undershoot. The good news is that it won't fall or climb forever -- there's a negative feedback effect due to chlorine usage/consumption being proportional to its level.
    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"

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