Become a TFP Supporter Pool Math Forum Rules Pool School
Results 1 to 8 of 8

Thread: Spa vacation prep

  1. Back To Top    #1

    Join Date
    Jul 2016
    Location
    Columbus/OH
    Posts
    44

    Spa vacation prep

    Hey all,

    We will be going on a week long vacation next week. We will have someone here watching our dogs that can help out with the spa but I want to try to minimize the work they have to do to care for the spa while we are gone. From what I understand from reading on here, I should:

    1.) Lower the temp(I can go down to 80)
    2.) Raise FC to shock level(CYA is around 30, so FC maybe 12?)

    Any other suggestions?

    Also on a water chemistry note, I have been running the dichlor and bleach method now for 2.5 months. Not an issue at all to complain about. I love it.
    My numbers when I started were
    pH-7.6
    TA-60
    CH-125

    Over the past two months TA and pH have slowly risen. Todays numbers:;
    pH-7.8
    TA-100(might be 90 The water is light red at 9 drops, but I do notice a stronger color intensity of red when I add that 10th drop)
    FC-6
    CC-.5


    From what I remember reading on here, it is normal to have a slow rise of pH and TA over time.

    So in preparation for vacation Id like to adjust these numbers if you guys think I should before I go. What do you guys think and what chemicals should I use to adjust if you think it is necessary?

    Thanks again!
    2016 Caldera Martinique 395 gallon above ground portable hot tub

  2. Back To Top    #2
    Mod Squad pooldv's Avatar
    Join Date
    Aug 2012
    Location
    DFW, TX
    Posts
    20,342

    Re: Spa vacation prep

    Yes, raise FC to shock level with bleach, FC/CYA Chart. I would go ahead and lower TA back to 50. Also, lowering the temp to 90 or so will save you a few bucks on electricity and use less chlorine.
    TFP Moderator
    If TFP helped you or saved you money - Become a TFP Supporter! <--Click here
    2012 build and pics, 20k gal gunite, black onyx pebblesheen, OK flagstone, IntellifoVS, cart filter w/Pleatco, IC40 SWG, Solartouch, 5 12'x4' solar panels, HP50HA heat pump, 8mil solar cover, borates, TF-100 test kit, SONOS, Doheny's Discovery Robot, hot tub on bleach

  3. Back To Top    #3

    Join Date
    Jul 2016
    Location
    Columbus/OH
    Posts
    44

    Re: Spa vacation prep

    Quote Originally Posted by pooldv View Post
    Yes, raise FC to shock level with bleach, FC/CYA Chart. I would go ahead and lower TA back to 50. Also, lowering the temp to 90 or so will save you a few bucks on electricity and use less chlorine.
    So if I read correctly, to lower the TA I want to add sodium bisulfate, which I have on hand here. I need to add enough to lower pH to 7.0-7.2 which will lower the TA as well and then aerate for 30 minutes to get the pH back up and then check values again. According to Pool Math I need I need 1.3 oz by weight or .9 by volume of dry acid to lower pH from 7.8 to 7.2...Silly question...if I am using a simple kitchen measuring cup, is that volume or weight....I think volume right? Also, when you referred to lowering temp to 90, are you talking about all the time or when I go on vacation. I can get the temp to 80 for vacation in order to lower the chlorine consumption but obviously that is too low of a temp for the fall time coming up in Ohio. Do I have this right?
    2016 Caldera Martinique 395 gallon above ground portable hot tub

  4. Back To Top    #4
    Mod Squad pooldv's Avatar
    Join Date
    Aug 2012
    Location
    DFW, TX
    Posts
    20,342

    Re: Spa vacation prep

    Yes, that is correct. You can use dry acid or Muriatic acid. Yes, that is volume. You can use a kitchen scale to measure weight. But, volume is fine.

    Yes, drop the temp to 90 while you are on vaca to reduce chlorine consumption.

    Here is another version of the process for pools, Pool School - Lower Total Alkalinity
    TFP Moderator
    If TFP helped you or saved you money - Become a TFP Supporter! <--Click here
    2012 build and pics, 20k gal gunite, black onyx pebblesheen, OK flagstone, IntellifoVS, cart filter w/Pleatco, IC40 SWG, Solartouch, 5 12'x4' solar panels, HP50HA heat pump, 8mil solar cover, borates, TF-100 test kit, SONOS, Doheny's Discovery Robot, hot tub on bleach

  5. Back To Top    #5

    Join Date
    Jul 2016
    Location
    Columbus/OH
    Posts
    44

    Re: Spa vacation prep

    Quote Originally Posted by pooldv View Post
    Yes, that is correct. You can use dry acid or Muriatic acid. Yes, that is volume. You can use a kitchen scale to measure weight. But, volume is fine.

    Yes, drop the temp to 90 while you are on vaca to reduce chlorine consumption.

    Here is another version of the process for pools, Pool School - Lower Total Alkalinity
    Perfect. Thanks for the guidance!


    2016 Caldera Martinique 395 gallon above ground portable hot tub

  6. Back To Top    #6

    Join Date
    Jul 2016
    Location
    Columbus/OH
    Posts
    44

    Re: Spa vacation prep

    Quote Originally Posted by pooldv View Post
    Yes, that is correct. You can use dry acid or Muriatic acid. Yes, that is volume. You can use a kitchen scale to measure weight. But, volume is fine.

    Yes, drop the temp to 90 while you are on vaca to reduce chlorine consumption.

    Here is another version of the process for pools, Pool School - Lower Total Alkalinity
    I added the dry acid and ran jets for 10 minutes. I tested immediately after and TA is 60 and pH is 7.4. What do you think?
    Also, just out of curiosity, will the pH continue to rise throughout the day from the aeration I just did? What if we use the spa later today, will that cause the pH to continue to rise? At what point does the pH top off with my TA at 60.. I am starting to love this water chemistry stuff and trying to understand the science behind it.

    Thanks again!
    2016 Caldera Martinique 395 gallon above ground portable hot tub

  7. Back To Top    #7
    Mod Squad pooldv's Avatar
    Join Date
    Aug 2012
    Location
    DFW, TX
    Posts
    20,342

    Re: Spa vacation prep

    60 is probably fine for now. No, the pH will not continue to rise from the aeration once it is turned off. But, the TA might push the pH up a bit. Having the cover on will help reduce the rise also. PH rise is all about carbon dioxide out gassing to the air. The lower the TA the closer the water and the air are to equilibrium. To a point. Usually 50 is as low as you want to go because less than 50 can allow pH to become erratic. It is possible that your pH will top out at 7.8 with TA at 60, but more likely 50 will be better for holding pH at 7.8.
    TFP Moderator
    If TFP helped you or saved you money - Become a TFP Supporter! <--Click here
    2012 build and pics, 20k gal gunite, black onyx pebblesheen, OK flagstone, IntellifoVS, cart filter w/Pleatco, IC40 SWG, Solartouch, 5 12'x4' solar panels, HP50HA heat pump, 8mil solar cover, borates, TF-100 test kit, SONOS, Doheny's Discovery Robot, hot tub on bleach

  8. Back To Top    #8

    Join Date
    Jul 2016
    Location
    Columbus/OH
    Posts
    44

    Re: Spa vacation prep

    Perfect. Thanks for the explanation!


    2016 Caldera Martinique 395 gallon above ground portable hot tub

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •