Leisure Time Spa 56 5 lb | Chlorine Sanitizer

• (1) Leisure Time Spa 56 Chlorinating Granules — 5 lb (80 oz) bucket of fast-dissolving granular dichlor chlorine
• Child-resistant cap with measured-pour opening
• Full dosing chart and application directions printed on the bucket label

• 99% sodium dichlor — 55% available chlorine, one of the most concentrated forms available for residential spa use
• EPA-approved sanitizer formulated specifically for hot water environments
• Sanitizes and shocks — same product handles daily residual and periodic superchlorination
• Fast-dissolving granular — fully dissolves in seconds with jets running, no pre-mixing required
• Built-in stabilization — dichlor includes cyanuric acid that protects chlorine from UV and heat breakdown
• Near-neutral pH — dichlor doesn't crash spa pH the way some unstabilized chlorine forms can
• Kills bacteria, viruses, and algae on contact at the recommended 2–3 ppm residual range
• 5 lb economy size — most cost-effective per ounce in the Leisure Time chlorine line
• Made in the USA by Leisure Time, a trusted name in spa chemistry for over 40 years

When Spa 56 dissolves in spa water, the sodium dichlor compound releases hypochlorous acid (HOCl) — the active sanitizing form of chlorine. Hypochlorous acid penetrates the cell walls of bacteria, viruses, and other microorganisms and destroys them on contact, typically within seconds at the recommended 2–3 ppm residual range. The reaction produces harmless byproducts (mainly chloride salts and water) that don't accumulate or affect water quality.

Two technical advantages set dichlor apart from other chlorine forms used in spas. First, dichlor dissolves into water at a near-neutral pH (around 6.7) — meaning it doesn't crash spa pH downward the way calcium hypochlorite ("cal-hypo") does, and doesn't push it sharply upward the way liquid sodium hypochlorite does. Your pH stays stable from dose to dose, which dramatically reduces the time spent chasing balance. Second, dichlor includes a built-in cyanuric acid component (formed during the dissolution reaction) that acts as a chlorine stabilizer. Stabilized chlorine resists breakdown from UV light, heat, and aeration — exactly the three forces that destroy unstabilized chlorine fastest in a hot tub.

The downside of stabilization is that cyanuric acid accumulates over time. After 3–4 months of continuous dichlor use, cyanuric acid levels can climb high enough to slow chlorine's killing power (a condition called "chlorine lock"). This is one of the main reasons spa water needs to be drained and refilled every 3–4 months regardless of how clean it looks — the stabilizer buildup eventually outpaces what dilution and partial drains can fix. A regular refill schedule keeps your sanitizer working at full strength all year.

Pro Tip: Test chlorine residual with a quality test strip every 2–3 days, not just when you remember. Chlorine drops faster in a hot tub than most people realize — heat, aeration, and bather load can pull residual from 3 ppm down to 0.5 ppm in a single weekend of heavy use. A spa with zero residual chlorine for even 24 hours can develop biofilm in the plumbing that takes weeks to fully clear. Predictable, small daily doses beat large reactive corrections every time.

Start-Up (Fresh Fill)

1. Clean spa surfaces and rinse or replace the filter cartridge before filling.
2. Fill the spa with fresh water. If using well water or fill water with metal content, treat with Metal Gon at this stage.
3. Balance pH (7.2–7.8) and total alkalinity (80–120 ppm) before adding chlorine.
4. Add ½ oz. of Spa 56 per 500 gallons of spa water (approximately ⅓ oz. for a typical 400-gallon spa) with the jets running.
5. Circulate for at least 5 minutes, then test residual chlorine. Target range: 2–3 ppm.
6. If residual is below 2 ppm, repeat the dose until target range is reached.
7. Spa is ready to use once residual chlorine reads between 2 and 3 ppm.

Daily / As-Needed Maintenance

1. Test residual chlorine with a quality test strip every 2–3 days at minimum, and after every use during heavy bather load periods.
2. When residual drops below 2 ppm, add ½ oz. of Spa 56 per 500 gallons.
3. Broadcast granules evenly over the water surface with jets running.
4. Wait at least 5 minutes for full dissolution and mixing before retesting.
5. Maintain residual at 2–3 ppm continuously between uses.

Superchlorination (Every 2–4 Weeks)

1. Test pH and alkalinity first — both should be within range before superchlorinating.
2. Add 1 oz. of Spa 56 per 500 gallons of spa water (double the standard maintenance dose).
3. Run jets with cover off for 15 minutes, then leave cover off until chlorine residual drops back to 2–3 ppm before getting in.
4. Superchlorination handles built-up organic load, eliminates chloramines, and is especially important after heavy bather usage, parties, or noticeable water quality decline.

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 chlorine absorbs moisture from the air and degrades quickly if left open
• Keep out of reach of children and pets
• Never mix dry chlorine with other chemicals — including other chlorine products, bromine, biguanide, 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: A 5 lb bucket is a great value, but only if it stays dry. Spa 56 is hygroscopic — it pulls moisture out of humid air, which is exactly the environment around most spas. If you store it in a poolhouse, garage, or anywhere humidity fluctuates, transfer it into an airtight container the day you open the bucket, or buy the smaller 2 lb size and replace it more often. Clumped or yellowed chlorine has lost potency and won't deliver the residual you're dosing for.

• Product: Leisure Time Spa 56 Chlorinating Granules
• Size: 5 lb (80 oz / 2.27 kg) bucket
• Form: Fast-dissolving granular
• Active Ingredient: Sodium Dichloro-s-Triazinetrione Dihydrate (99%)
• Available Chlorine: 55%
• EPA Approved: Yes
• Application: Daily or as-needed residual maintenance, plus superchlorination every 2–4 weeks
• Dose Rate (Maintenance): ½ oz. per 500 gallons
• Dose Rate (Superchlorination): 1 oz. per 500 gallons
• Treatment Capacity (5 lb): Approximately 160 standard maintenance doses
• Target Chlorine Residual: 2–3 ppm
• Target pH Range: 7.2–7.8
• Target Alkalinity Range: 80–120 ppm
• Sanitizer Compatibility: Chlorine-program spas; NOT compatible with biguanide systems (Baqua Spa, SoftSoak)
• 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)

Spa 56 is formulated for residential spas and hot tubs operating on a chlorine sanitizer program. Not compatible with biguanide sanitizers (Baqua Spa, SoftSoak) — chlorine and biguanide cannot be mixed.

• Sanitizer programs: primary sanitizer for any chlorine-based program; also works as the shock/superchlorination treatment for bromine programs that need a chlorine kickstart
• Not compatible with: biguanide sanitizers (Baqua Spa, SoftSoak) — these systems require their own dedicated shock product
• Works alongside: ozone systems, mineral cartridges (silver/copper), and salt-generated chlorine systems (as a supplement when residual drops)
• Spa shells: acrylic, vinyl, fiberglass, rotomolded plastic, stainless steel
• Equipment: safe on heater elements, circulation pumps, jet bodies, and standard cartridge filters at recommended dosing
• Companion products: pairs with the full Leisure Time Simple Spa Care line — Spa Up / Spa Down for pH, alkalinity increasers for buffering, Defender for scale, Metal Gon for fresh fills, Bright & Clear for clarity, and Renew as a chlorine-free alternative shock when bather return time matters
• Brand fit: works in Hot Spring, Caldera, Sundance, Jacuzzi, American Whirlpool, Bullfrog, and every other residential spa brand