Become a TFP Supporter Pool Math Forum Rules Pool School
Results 1 to 4 of 4

Thread: Can I Drain 2" each day and refill?

  1. Back To Top    #1

    Join Date
    Jul 2015
    Location
    Memphis, TN
    Posts
    4

    Can I Drain 2" each day and refill?

    I am new to this method and have read extensively the instructions. I do not have my drop test kit yet - should arrive on Monday!

    I currently have 6-way test strips and the CYA reading is 100. So, assuming that is a correct reading once I get the proper test kit, will I have to do a partial drain?

    The pool is only 1 year old and is vinyl lined. 33,000 gallons, 20 x 44. I have had no problems keeping the pool sparkly using the inline chlorinator but now am concerned about the CYA levels and think switching to this method is better because of the increase in CYA using the 3" chlorine tablets. (As an aside - why can't they make chlorine tablets without stabilizer?!)

    I'm worried about draining the pool by half or so. My question is this: Can I drain off 2" of water a day and refill with 2" from the hose? That way I won't be putting the liner at risk. We are on a well so water cost is not an issue.

    Thanks for any help and advice.
    33,000 vinyl liner pool, UV sanitation, chlorine, new pool owner

  2. Back To Top    #2
    Richard320's Avatar
    Join Date
    Jan 2010
    Location
    San Dimas, CA (LA County)
    Posts
    18,768

    Re: Can I Drain 2" each day and refill?

    Welcome!

    Yes, you can do it 2" at a time. When you get a proper test kit, check out Extended Test Kit Directions before you dump the CYA sample.
    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!

  3. Back To Top    #3

    Join Date
    Jul 2015
    Location
    Memphis, TN
    Posts
    4

    Re: Can I Drain 2" each day and refill?

    Thank you so much! Since my pool is currently clear and all other levels seem fine is it easy to switch over to the bleach method? I mean, my pool won't go green or anything weird - right? So worried!
    33,000 vinyl liner pool, UV sanitation, chlorine, new pool owner

  4. Back To Top    #4
    Richard320's Avatar
    Join Date
    Jan 2010
    Location
    San Dimas, CA (LA County)
    Posts
    18,768

    Re: Can I Drain 2" each day and refill?

    The pool doesn't care where the FC comes from, pucks, powders, bleach, or generated onsite in the SWG. As long as there is enough for your CYA level, it's not going to go green.

    My advice is to do your drain and add the day's bleach into the hose stream when you refill. Just keep FC above minimum for your CYA level and there won't be any problems.
    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!

Posting Permissions

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