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Thread: Do I need to test spa as well as pool?

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    Join Date
    Jan 2016
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    Allen, TX
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    Do I need to test spa as well as pool?

    I'm a the owner of a new in ground pool and spa. I have read through a lot of the pool school info, have the TF-100 test kit and now have everything balanced. Yay for me! I have the Pentair Intellichlor SWG. It has separate settings for both pool and spa output. The pool company that did the initial install only set it for the pool. I changed the output amount for the pool while balancing which is when I noticed it could be set for the spa also. Currently spa output is 0. I hadn't previously considered the spa separately. I'm not sure if the pool water gets completely circulated through the spa all the time or not. I assume it must be circulating at least somewhat while the spillway is on and the normal pool run setting does turn on the spillway as well as some sheer descents we have. However it normally runs at a low speed which pushes very little water over the spillway. I do have a spillway setting that ups the pump speed so more water goes over the spillway and to the sheer descents so they look nice and full.

    I did a basic total chlorine and ph test on the spa today and they are about the same as the pool currently. So I did not do the rest of the tests on the spa.

    My main question is do I need to regularly test the spa separately when I test the pool. Also I would appreciate any info on the circulation of water through the spa and whether I need to make sure the pump runs at a higher speed for some amount of time to make sure that happens.

    Sorry if this is a repeat question. I tried searching but when you use the words test, pool and spa you get practically every thread as a result.
    15.5K Gal, 18 37 Unusual Geometric Shaping, IG Pebble, All Pentair Equipment - Intelliflow VS Pump + Boost-Rite Pump for Racer Cleaner, FNS Plus DE Filter, Intellichlor SWG + IntellipH Automatic Dispenser, Mastertemp Heater, Globrite LEDs.

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    duraleigh's Avatar
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    Apr 2007
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    Re: Do I need to test spa as well as pool?

    My main question is do I need to regularly test the spa separately when I test the pool.
    Actually, I don't recall that question being asked in nine years.

    The answer is "no". Just test your pool. I would suggest you visually watch the spa for any signs of poor circulation (a little algae hiding in a nook) but I think you are good to go. Congrats for grasping the concepts so quickly
    Dave S.
    42k vinyl and concrete pool, 1.5hp pump, 140gpm filter
    TFTestkits , PoolMath , Pool School

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    Jan 2016
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    Allen, TX
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    Re: Do I need to test spa as well as pool?

    Thanks! I thought that was probably the answer but I like to cover my bases when learning something completely new like this. This site is an awesome resource which allowed me to get up to speed very quickly.
    15.5K Gal, 18 37 Unusual Geometric Shaping, IG Pebble, All Pentair Equipment - Intelliflow VS Pump + Boost-Rite Pump for Racer Cleaner, FNS Plus DE Filter, Intellichlor SWG + IntellipH Automatic Dispenser, Mastertemp Heater, Globrite LEDs.

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    Richard320's Avatar
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    Jan 2010
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    San Dimas, CA (LA County)
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    18,768

    Re: Do I need to test spa as well as pool?

    I've never tested my spillover spa. I suspect it would be wrong. With the aeration it gets I suspect the pH would be higher than the rest of the pool.

    If you can, move the valves manually or using "spa drain", and then refill it from the pool. You'll see how fast it fills. Full blast, mine is less than fifteen minutes. Then figure if I only run 25% of the water back through the spa after filtering, it will pretty much have exchanged an equal volume of water in an hour. Two turnovers in the two hours I run it in winter. Three in summer.
    16K freeform gunite with spa; Pentair 4000 DE filter; Century Whisperflow 1 HP; Pentair Minimax heater.
    Troublefree does not mean Maintenancefree. It's like brushing your teeth: You can spend a couple minutes a day and pennies a week or go to the dentist once a year and spend several thousand dollars.
    A pool is like a pet - you have to feed it every day, even the days you don't want to play with it!

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    wjr75's Avatar
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    Jun 2013
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    IL
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    Re: Do I need to test spa as well as pool?

    I run my spa in spa mode for 15 minutes each day and also during that time run the jets and blower for 5 minutes. This gets fresh chlorine in the spa pipes. I just test the pool chemicals when it is in pool mode which has a spa spillover.
    Inground 22k gallon gunite 15x31 main pool, 15x7 wading pool/sunning deck, hot tub/with overflow (9' octagon with limestone top) & slide NSWG, Aqua Blue Pebble Sheen
    Filter dual cartridge Sta-rite 450sq/ft, TF-100 Test Kit
    Heater Raypak 2100 400k btu cupro-nickel exchanger
    Auto pool cover, Polaris 280 auto pool cleaner, Jandy AqualinkRS8 Remote Control System

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