This is derived in large part from TFP’s “How do I use Bromine in my Spa (or pool)?” and “How do I use Chlorine in my Spa (or pool)?”.
It is written custom for my own Marquis Epic spa (450 gallons = 1700 liters) for the 3-step system since this spa often goes for weeks unattended.
I’m looking for feedback on mistakes I’ve made, recommendations for changes to my plan, links to products that people prefer to use. I’d like this to come out as an easy to follow and understand reference document. Thanks.
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Sodium Bromide is used to create a bromide reserve in the water. Bromide itself doesn’t have any direct positive or negative effect on the spa, but it is turned into bromine by shocking the spa, and bromine then sanitizes the pool by oxidizing dissolved waste.
Sodium bromide seems to be a bit hard to find by that name. Try looking for the following products:
Sodium bromide converts into bromine each time you shock the spa, and is also activated by your ozonator if you have one. The cheapest way to shock the spa is with unscented chlorine bleach, whose active ingredient is sodium hyperchlorite. Approximately 25ml of pure sodium hyperchlorite should be good for a 500 gallon spa, or let’s say 20-23ml of pure sodium hyperchlorite for my particular 450 gallon spa. It looks like 1 cup of Chlorox (8.25%) should be sufficient to shock my spa. After shocking, bromine levels should spike to above 10ppm. Target level for bromine in my spa is 4ppm, and the spa can be used from 4-8ppm. I typically shock the spa upon arrival. If the spa is seeing extremely heavy usage (10+ bathers in a day), I do a smaller shock at the end of each day.
The Taylor K-2106 test kit is the recommended test kit. Test and correct water chemistry levels every morning that the spa might get some use (target bromine: 4ppm, pH 7.5, TA 50ppm, CH 150ppm). In my area, CH starts at close to zero so it is the first parameter to be adjusted on water changes. Then TA, and then bromine. pH normally comes out at an acceptable level without being directly adjusted (7.3-7.7). I plan to refill the tub every 4 months.
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Thanks again for help/recommendations
It is written custom for my own Marquis Epic spa (450 gallons = 1700 liters) for the 3-step system since this spa often goes for weeks unattended.
I’m looking for feedback on mistakes I’ve made, recommendations for changes to my plan, links to products that people prefer to use. I’d like this to come out as an easy to follow and understand reference document. Thanks.
--
Sodium Bromide is used to create a bromide reserve in the water. Bromide itself doesn’t have any direct positive or negative effect on the spa, but it is turned into bromine by shocking the spa, and bromine then sanitizes the pool by oxidizing dissolved waste.
Sodium bromide seems to be a bit hard to find by that name. Try looking for the following products:
- Leisure Time Sodium Bromide (Walmart USA, InTheSwim USA, Amazon USA, Amazon.ca Canada)
- SeaKlear Sodium Bromide (Amazon USA, Amazon.ca Canada)
- Rendezvous Broma Start
- Spa Specialties Robarb Bromine Energizer
- Natural Chemistry Spa Bromine Start
- hth Brom-Start (Home Depot USA, Walmart.ca Canada third party seller)
Sodium bromide converts into bromine each time you shock the spa, and is also activated by your ozonator if you have one. The cheapest way to shock the spa is with unscented chlorine bleach, whose active ingredient is sodium hyperchlorite. Approximately 25ml of pure sodium hyperchlorite should be good for a 500 gallon spa, or let’s say 20-23ml of pure sodium hyperchlorite for my particular 450 gallon spa. It looks like 1 cup of Chlorox (8.25%) should be sufficient to shock my spa. After shocking, bromine levels should spike to above 10ppm. Target level for bromine in my spa is 4ppm, and the spa can be used from 4-8ppm. I typically shock the spa upon arrival. If the spa is seeing extremely heavy usage (10+ bathers in a day), I do a smaller shock at the end of each day.
The Taylor K-2106 test kit is the recommended test kit. Test and correct water chemistry levels every morning that the spa might get some use (target bromine: 4ppm, pH 7.5, TA 50ppm, CH 150ppm). In my area, CH starts at close to zero so it is the first parameter to be adjusted on water changes. Then TA, and then bromine. pH normally comes out at an acceptable level without being directly adjusted (7.3-7.7). I plan to refill the tub every 4 months.
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Thanks again for help/recommendations