Leisure Time Brominating Granular | Fast-Dissolve

• (1) Leisure Time Brominating Granular — fast-dissolving granular bromine sanitizer
• Child-resistant cap with measured-pour opening
• Start-up, maintenance, and shock dosing chart printed on the bottle label

• Sanitizes and shocks in one product — granular bromine for residual maintenance plus a higher shock dose
• Built-in bromide source — 14.7% sodium bromide helps establish and maintain the bromide reserve
• Fast-dissolving — active bromine in range within 15 minutes, not the days a tablet floater takes
• Add directly to water — no floating dispenser or in-line feeder required
• Ideal for fast corrections — restores bromine after parties, heavy use, or an empty floater
• Helps clarify water — reduces bacterial growth and supports sparkling-clear water
• Low-odor bromine sanitation — none of the harsh chlorine smell
• Works alongside Brom Tabs — granular for fast boosts, tablets for steady maintenance
• Made in the USA by Leisure Time, a trusted name in spa chemistry for over 40 years

Bromine sanitation is a two-ingredient system: you need bromide ions in the water (the "bromide bank" or reserve) and an oxidizer to convert those ions into active hypobromous acid — the form that actually kills bacteria, viruses, and algae. Slow-dissolve bromine tablets handle both jobs gradually over time, which is great for steady maintenance but slow to respond when you need sanitizer right now.

Brominating Granular packages both ingredients in fast-dissolving form. The sodium bromide (14.7%) contributes bromide ions to the reserve, and the sodium dichlor (84.15%) acts as the oxidizer that immediately converts bromide — both the product's own and any already in your water — into active bromine. Because it's granular and dissolves in seconds, the conversion happens fast: dose the product, circulate for 15 minutes, and test, and you'll typically have active bromine in the 2–4 ppm target range. This is dramatically faster than waiting for tablets to dissolve and build residual.

The dual-ingredient design is also why this product can serve as a complete fast-response bromine source. At fresh fill, a heavier dose establishes both the bromide reserve and active sanitizer simultaneously. For maintenance, a small dose tops up residual when it drifts low. For shock, a larger dose oxidizes accumulated organic load and reactivates spent bromamines back into killing form. One granular product covers all three needs on the fast-response side, while tablets in a floater handle the slow-and-steady daily maintenance.

Pro Tip: Bromine has a hard safety ceiling that chlorine programs don't emphasize as strongly: do not re-enter the spa above 8 ppm bromine— higher levels risk skin and respiratory irritation. Granular bromine raises residual fast, which makes overshooting easier than with slow tablets. Add the smaller maintenance dose first (1½ tsp per 300 gallons), circulate 15 minutes, and test before adding more. It's always easier to add a second small dose than to wait for an overshoot to drop back into the safe range before you can soak.

Fresh Fill / Start-Up

1. Clean all surfaces, rinse or replace the filter, and fill the spa with fresh water.
2. Treat for metals with Metal Gon if your fill water contains iron, copper, or manganese (well water or older plumbing).
3. Balance calcium hardness and total alkalinity, and adjust pH to 7.2–7.6.
4. With the circulation system running, add 1½ tsp (7.5 g) of Brominating Granular per 300 gallons of spa water directly to the water.
5. Measure bromine residual after 15 minutes. Repeat the dose until active bromine reaches 2–4 ppm.
6. The spa is ready to use once bromine residual is in the 2–4 ppm range (and below 8 ppm).

Residual Maintenance

1. Test bromine residual every 2–3 days with a quality spa test strip.
2. When residual drops below 2 ppm, add 1½ tsp (7.5 g) per 300 gallons with circulation running.
3. Wait 15 minutes and retest. Maintain residual at 2–4 ppm.
4. For day-to-day maintenance, most owners rely primarily on Brom Tabs in a floater and use Brominating Granular for faster top-ups when residual drops.

Shock Treatment (After Heavy Use)

1. For shock — after parties, heavy bather load, or visible water quality decline — add 6 tsp (30 grams) per 300 gallons of spa water.
2. Run circulation with the cover off for at least 15 minutes.
3. Do not re-enter the spa until bromine residual drops below 8 ppm. Test before getting in.

Storage & Handling

• Store in original container in a cool, dry, well-ventilated area, away from direct sunlight
• Keep tightly closed when not in use — granular bromine absorbs moisture and degrades if left open
• Keep out of reach of children and pets
• Never mix with other chemicals in dry form — including chlorine, other bromine products, biguanide, acids, or oxidizers. Concentrated mixing can cause violent reactions or fire. Always add directly to spa water.
• Store separately from acids, oxidizers, and organic materials

Pro Tip: Brominating Granular and Brom Tabs both establish bromine, but they consume your bromide bank differently. Heavy reliance on granular (which carries its own bromide) builds the reserve faster but can also push bromide levels high over a fill cycle, which means draining sooner. If you find you're refilling more often than every 3–4 months, shift more of your daily maintenance to tablets in the floater and reserve the granular for genuine fast-response situations. Balanced use of both keeps the bromide bank in the sweet spot all cycle long.

• Product: Leisure Time Brominating Granular Bromine Sanitizer
• Form: Fast-dissolving granular
• Active Ingredients: Sodium Dichloro-s-Triazinetrione, anhydrous (84.15%) + Sodium Bromide (14.7%)
• Other Ingredients: 1.15%
• Functions: Sanitize + shock + bromide reserve in one product
• Application: Added directly to spa water with circulation running
• Dose Rate (Start-Up / Maintenance): 1½ tsp (7.5 g) per 300 gallons
• Dose Rate (Shock): 6 tsp (30 g) per 300 gallons
• Target Bromine Residual: 2–4 ppm
• Safety Ceiling: Do not re-enter above 8 ppm bromine
• Target pH at Start-Up: 7.2–7.6
• Sanitizer Compatibility: Bromine programs only; NOT compatible with biguanide systems
• Spa Return Time: 15 minutes (once residual is in 2–4 ppm range)
• Country of Origin: Made in USA
• Brand: Leisure Time Spa Care
• Hazmat Classification: Regulated oxidizer — ground shipping only; not eligible for air shipment (no AK, HI, or international air)

Brominating Granular is formulated for residential spas and hot tubs running a bromine sanitizer program. The dichlor (chlorine) content makes it incompatible with biguanide systems.

• Sanitizer programs: bromine systems only — works as a fast-response sanitizer and shock alongside Brom Tabs
• Not compatible with: biguanide sanitizers (Baqua Spa, SoftSoak); the chlorine content cannot be combined with biguanide chemistry
• Works alongside: ozone systems and mineral cartridges as a supplemental bromine source
• Spa shells: acrylic, vinyl, fiberglass, rotomolded plastic, stainless steel — add directly to water with circulation running, never broadcast onto a dry shell
• Equipment: safe on heater elements, circulation pumps, jet bodies, and standard cartridge filters at recommended dosing
• Companion products: Brom Tabs (slow-dissolve daily maintenance), Reserve sodium bromide (dedicated bromide bank builder), Renew (non-chlorine shock alternative), and the full Leisure Time Simple Spa Care line — Metal Gon at fresh fills, Spa Up / Spa Down for pH, Defender for scale
• Brand fit: works in Hot Spring, Caldera, Sundance, Jacuzzi, American Whirlpool, Bullfrog, and every other residential spa brand running a bromine program