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Thread: Test Kit for my hot tub

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    Join Date
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    Test Kit for my hot tub

    I'm very new to this website and am trying to sort out all the great information. I have a 260 gallon outdoor hot tub (purchased August 2014) and am currently using Bromine (Frog with Bromine and Silver Chloride cartridges). I'm using AquaChek test strips. I'm trying to figure out if I want to continue with a Bromine system, or switch to chlorine. I don't have an ozonator (if that makes a difference). We have well water, and a cartridge filter. Can you recommend a test kit and tell me which system would require less maintenance. Thank You. The more I'm learning, the less I know!

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    pwrstrk's Avatar
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    Test Kit for my hot tub

    Welcome to TFP !
    Theses are the Test Kits we recommend using.
    If you take a look in Pool School there is a good article on using chlorine in your hot tub. Take a look at it. I'm not sure if switching to chlorine will be any easier on maintaining your hot tub.
    Let's see if some others with hot tubs can give you some better feedback on using chlorine. You can also search the spa and hot tub forum for some answers. Here's a thread I found if you would like to take a look. http://www.troublefreepool.com/showthread.php?t=9670.
    Jeff
    24'x54" AG Morada RTR (by wilbar) 13'500 gal. Hayward Powerflo Matrix 1hp 2 speed. Hayward Perflex EC65 DE filter.

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    Re: Test Kit for my hot tub

    If you let us know more about your tub usage, then we can help you decide which method would be best for you. Since you don't have an ozonator, that makes using chlorine easier even if you don't use the tub every day or two. Ozone depletes chlorine in between soaks. How many days per week do you use the spa? How many people use the spa at one time? How long do they soak?
    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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    Re: Test Kit for my hot tub

    Typically there are two people using it for 30-45 minutes 2-3 times per week.

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    Re: Test Kit for my hot tub

    OK thanks for that info. That's very helpful. With that kind of bather load I think the Dichlor-then-bleach method will work best for you, especially since you don't have an ozonator and you are using the tub frequently enough to be able to add chlorine after each soak and have it last through to the next soak. You can always try bromine at some point perhaps during the latter part of your water change cycle (i.e. a week or two before you need to change the water) to see if you like it better, but generally chlorine does a better job of keeping the water clear, getting rid of bather waste, and having a less objectionable smell if used properly.

    In Jeff's first response to your post in this thread he linked to the instructions for the Dichlor-then-bleach method. Why don't you take a look at it and ask questions if you have any.

    If you were to use only Dichlor in the spa, then it would build up Cyanuric Acid (CYA) and you would likely have to change the water after the standard Water Replacement Interval (WRI) which is (1/9) x (Spa Size in Gallons) / (# of Person-Hours Per Day) = (1/9) x (260 gallons) / ((2.5 days per week)/(7 days/week) * (2 people) * (40 minutes)/(60 min/day))) = 61 days so around 2 months, but with the Dichlor-then-bleach method you will likely be able to go twice as long between water changes and the water will be in better shape even at the end of that 4 month interval. Note that you have a smaller spa so the bather load is relatively high, though 4 months isn't so bad for changing the water.

    If this is a new spa, then I'd recommend you getting Ahh-Some and use it just before changing the water, even if you do this with an initial water fill and water replacement. It will clean out any greases, oils, or biofilm that may be in a new spa. If you do not do this, then you should not expect to go as long as indicated above before your first water change.
    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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    Jul 2014
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    Re: Test Kit for my hot tub

    Using bleach methode after ahh-some clean. Choosen for tf100 testkit.
    Instead of dichlore i added cya right after fill. For the rest i love it.
    Only side note is that i have to pay attention to fc level. Meaning i have to add chlorine every day to maintain correct fc level. Trying to solve that via peristaltic pump installation.
    Arctic Spa Klondike Legend SE
    AG / Filter Cardtrige 50m2/ TFP / borates / TF100
    478 gallon @ 99.5-103.1 F Depending on season
    Ozonator disconnected

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    Re: Test Kit for my hot tub

    Thank you for all the great information! I've already ordered the Taylor K-600 kit and started reading the Dichlor/bleach info. I look forward to having a sparkling, fresh smelling spa soon.

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