Become a TFP Supporter Pool Math Forum Rules Pool School
Results 1 to 5 of 5

Thread: Bromine Reserve

  1. Back To Top    #1

    In the Industry

    Join Date
    May 2013
    Location
    Deep East Texas
    Posts
    76

    Bromine Reserve

    Question: how many lbs of Bromine tabs would it take to build an adequate sodium bromine reserve in a 177k pool?

    We will be doing some renovation on one of the pools this August and I would like to only meet the min reserve requirements to make it a bromine pool. Assuming I can keep reserve down to a min. I think keeping a lower ppm as possible for the public would be best. Right now I have twelve years of Br tab use and the reserve must be extremely high because I can't hold 4.5 ppm without algae taking over. Advice?
    In ground 25,000 gallon - vinyl liner - Sand filter - residential pool
    Also maintain two commercial 190,000 gallon competitive indoor bromine facilities -9x Sand filters

  2. Back To Top    #2
    Madison Mike's Avatar
    Join Date
    Apr 2014
    Location
    Columbus, WI
    Posts
    31

    Re: Bromine Reserve

    Assuming a rate of 1/2 ounce per 100 gallons of water, I come up with 55 lbs of sodium bromide. You wouldn't use tabs for this, as they have chlorine and bromine in them to mix with the sodium bromide to create hypobromous acid. I think I got that right!
    Jacuzzi J375 Spa, 415 gallons, Bromine Sanitizer

  3. Back To Top    #3
    JasonLion's Avatar
    Join Date
    May 2007
    Location
    Silver Spring, MD
    Posts
    37,879

    Re: Bromine Reserve

    Bromine tabs will eventually build up a bromide reserve, though I don't know how quickly. But "reserve must be extremely high because I can't hold 4.5 ppm without algae taking over." doesn't make sense to me. The size of the bromide reserve doesn't really have anything to do with getting algae or not, at least that I can think of related to high levels.
    19K gal, vinyl, 1/2 HP WhisperFlo pump, 200 sqft cartridge filter, AutoPilot Digital SWG, Dolphin Dynamic cleaning robot
    Creator of PoolMath and Pool Calculator. Other handy links: Support this site, TF Test Kits, Pool School

  4. Back To Top    #4

    In the Industry

    Join Date
    May 2013
    Location
    Deep East Texas
    Posts
    76

    Re: Bromine Reserve

    Quote Originally Posted by JasonLion View Post
    Bromine tabs will eventually build up a bromide reserve, though I don't know how quickly. But "reserve must be extremely high because I can't hold 4.5 ppm without algae taking over." doesn't make sense to me. The size of the bromide reserve doesn't really have anything to do with getting algae or not, at least that I can think of related to high levels.
    I thought I read on here that a high bromine reserve would act similar to high CYA like in outdoor pools? So the best way to do this is without tabs and just add sodium bromide?
    In ground 25,000 gallon - vinyl liner - Sand filter - residential pool
    Also maintain two commercial 190,000 gallon competitive indoor bromine facilities -9x Sand filters

  5. Back To Top    #5

    Join Date
    Mar 2007
    Location
    San Rafael, CA USA
    Posts
    12,082

    Re: Bromine Reserve

    It's not the bromide reserve that acts like CYA, but rather the DMH leftover from use of bromine tabs (BCDMH or DBDMH) that could act like CYA at high levels. So you want to avoid use of the bromine tabs and just use sodium bromide at the dosage indicated. Then use any oxidizer to convert the bromide to bromine.

    However, why do you want a bromine pool? It generally costs more and bromine is not as good an oxidizer as chlorine so if you don't use chlorine to produce more bromine your pool can end up getting cloudy. I did read in your signature that you have two indoor bromine pool facilities so I suppose you are just keeping things as they are. The other reason to avoid bromine is that it produces worse disinfection by-products (the brominated THMs are worse than the chlorinated THMs, for example).
    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"

Posting Permissions

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