Bromine: a sodium bromide reserve in fresh water, activated with a small oxidizer dose and kept up with bromine tablets. Pick your tub size for a full table, or use the calculator for any volume.
| Tub size | Dose |
|---|---|
| 200 gallons (757 L) | 30 g sodium bromide |
| 250 gallons (946 L) | 37 g sodium bromide |
| 300 gallons (1,136 L) | 44 g sodium bromide |
| 350 gallons (1,325 L) | 52 g sodium bromide |
| 400 gallons (1,514 L) | 59 g sodium bromide |
| 500 gallons (1,893 L) | 74 g sodium bromide |
Add
0.45oz
of Non-chlorine shock (MPS 45%)
13 gabout 1¾ tsp by volume
Raises bromine from 1 ppm to 5 ppm in 400 gal, if the tub has a bromide reserve.
Check the product label. Strengths vary by brand, so enter the % printed on yours. Add one chemical at a time, into the water, and never mix chemicals.
Save this test and get a reminder before your next soak.
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