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Thread: Changing from bromine to chlorine...I think

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    Changing from bromine to chlorine...I think

    Hello All,

    I had convinced myself to move to chlorine this year in our 2169 gallon fibreglass swim spa. I've purchased the Taylor k-2006 and I've completed an inventory of my existing chemicals.

    Yesterday, I drained and refilled the swim spa. I added dichlor according to the pool calculator. The water results are listed below. My only reservation now is that I have a tub of bromine tabs that were purchased last summer and stored outside during the winter. Should I use Bromine until the tabs are finished and change over at the mid-season refill? Should I use the Bromine for the winter fill (we run at 104 then)? I hate to waste chemicals and I hate to waste money. I should have asked this question before adding the dichlor but I don't know if that matters given my water testing data.

    From what I see:
    I'll need to purchase calcium chloride whether I run bromine or chlorine.
    I'll need to keep adding dichlor to increase the CYA if I continue with chlorine. Day 2 of the 4 day start up would be today.
    I'll need to purchase bromide to start a bank if I use the Bromine tabs. I'll also need to purchase the Taylor reactants for bromine.
    Did I get that right? I've been reading everything on this site for many months...thanks

    CYA 0
    FC 5
    CC 1
    Ca hardness 140
    pH 7.5
    TA 95
    2169 gallon AG Hydropool swimspa converting to Cl with ozonator, fibreglass
    Hard cover on overnight and in colder weather, solar blanket on sunny days
    Toronto area, Ontario...pool is in full sun...at least when we have sun for two short summer months.

  2. Back To Top    #2

    Re: Changing from bromine to chlorine...I think

    I forgot to mention that the temp was 66F when I tested the water. I'm aiming for 84F in a day or two.
    2169 gallon AG Hydropool swimspa converting to Cl with ozonator, fibreglass
    Hard cover on overnight and in colder weather, solar blanket on sunny days
    Toronto area, Ontario...pool is in full sun...at least when we have sun for two short summer months.

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    elwood58's Avatar
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    May 2012
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    Re: Changing from bromine to chlorine...I think

    I do not see where CH needs to be increased for a fiberglass pool. You will need to get stabilizer (CYA) up, but you can use the lower section on pool calculator to know when to stop. Remember, CYA does not show up in testing for several days.
    19204 Gallon L Shape with a 10X10 2nd Step Baja Ledge. Intellichlor IC-40, IntellipH, Cartridge Filter, Pentair Heater/Chiller (Heat Pump). Tons of Deck with Deck Jets. Construction Complete 6/5/17.

    "If you don't measure it, you can't manage it!"

  4. Back To Top    #4

    Re: Changing from bromine to chlorine...I think

    Thank you for your response. I thought CH wasn't necessary only for vinyl pools.
    2169 gallon AG Hydropool swimspa converting to Cl with ozonator, fibreglass
    Hard cover on overnight and in colder weather, solar blanket on sunny days
    Toronto area, Ontario...pool is in full sun...at least when we have sun for two short summer months.

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