Calcium Chloride 25 kg – Premium Water Balance & Maintenance Solution

Perfect for Pool Owners, Commercial Operators & Industrial Use

Keep your pool water crystal clear and perfectly balanced with Viva Blu Calcium Chloride (25 kg) – a high-purity, fast-acting solution designed to increase water hardness, protect surfaces, and prevent costly corrosion or scaling issues.
Trusted by pool professionals, resorts, and maintenance teams, Viva Blu’s formulation ensures consistent performance and reliable results every time.

Key Benefits

Recommended Applications

• Swimming pools – maintain correct calcium hardness levels for balanced water

• Dust control – stabilise unsealed roads, driveways, or construction sites

• De-icing agent – effective in cold climates to prevent ice build-up

• Industrial use – moisture control in manufacturing, warehousing, and packaging environments

Pool Dosing Instructions

Tip: Always test calcium hardness before dosing. Ideal range for pools: 200 – 400 ppm.
Dissolve the required amount in a bucket of water and add slowly around the pool perimeter with the pump running.

Safety & Handling

• Always wear gloves and eye protection when handling chemicals

• Store in a cool, dry location away from moisture

• Avoid mixing with other pool chemicals

• Keep out of reach of children and pets

Product Specifications

Technical Reference

Technical Specifications

Applications & Use Cases

• Swimming pool calcium hardness adjustment: Raising calcium hardness (CH) in residential and commercial pools, spas, and water parks to the recommended range of 200–400 mg/L (ppm), in accordance with SPASA Australia guidelines.
• Surface protection in concrete and plaster pools: Preventing aggressive water from etching, pitting, or dissolving cementitious pool surfaces by maintaining a positive Langelier Saturation Index (LSI).
• Spa and hydrotherapy pool water balance: Maintaining appropriate hardness levels in high-temperature spa environments (typically 150–250 mg/L CH) where evaporation and dilution create more rapid hardness fluctuation.
• Dust suppression on unsealed roads, mine haul roads, and construction sites: Applied as an aqueous solution to suppress fugitive dust by absorbing atmospheric moisture and binding fine particles to the road surface.
• Concrete set acceleration: Used as a concrete admixture to accelerate the hydration of Portland cement in cold-weather concreting operations.
• Refrigeration brine: Used as a low-freezing-point brine solution in indirect refrigeration systems and ice rinks.
• Desiccation and moisture control: Industrial drying and moisture absorption in enclosed environments, shipping containers, and storage facilities.
• Food processing: Food-grade calcium chloride is used as a firming agent (INS 509), in cheese manufacture, and in electrolyte formulations. Note: food-grade specification must be confirmed separately — pool/technical grade is NOT suitable for food applications.
• Oil and gas drilling fluids: Calcium chloride brine used as a completion and workover fluid to control formation pressure.
• Aquaculture and aquarium water hardness adjustment: Raising general hardness (GH) in freshwater aquaculture systems and display aquaria.
• Water treatment — calcium supplementation: Adding calcium to treated potable water to prevent corrosion of distribution infrastructure, subject to compliance with Australian Drinking Water Guidelines (ADWG) and AS/NZS 4020.

Dosing Rates & Guidelines

Dosing rates are indicative based on standard Australian industry practice. Site-specific water chemistry, existing calcium hardness, total dissolved solids, temperature, and pool volume must be assessed before dosing. Always test water before and after treatment.

Dilution Instructions

General Dissolution Principles

• Calcium chloride dissolution is strongly exothermic — the solution will become hot during mixing. This is normal and expected. Avoid contact with hot solution.
• Never add water to solid calcium chloride in a sealed or restricted container — heat and pressure build-up can cause splashing or container failure.
• Always add solid calcium chloride to water (not water to solid) when preparing concentrated solutions.
• Use only clean, potable or process water free of high phosphate, carbonate, or sulphate levels to avoid precipitation of insoluble calcium salts during dissolution.

Pool Water Hardness Adjustment — Pre-Dissolving Method (Recommended)

1. Put on full PPE before handling: chemical splash goggles, nitrile or PVC gloves (minimum 0.3 mm), and chemical-resistant apron.
2. Calculate the required dose using the formula: Mass (kg) = (Target CH − Current CH) × Pool Volume (m³) × 0.00135 for 77% dihydrate product. Example: raising CH by 50 ppm in a 50 m³ pool requires approximately 3.4 kg of product.
3. Fill a clean, non-metallic bucket (20 L minimum capacity, HDPE preferred) with approximately 10 litres of clean pool water or tap water at ambient temperature.
4. Slowly add the pre-weighed calcium chloride to the water in small increments while stirring continuously with a non-metallic paddle or rod.
5. Allow the solution to cool to ambient temperature (allow 10–15 minutes) before application to the pool.
6. With the pool pump and filtration system running at full circulation, slowly pour the cooled solution into the pool in front of a return jet or into the deep end, distributing it around the perimeter. Do not pour directly onto pool surfaces, vinyl liners, or adjacent to steps.
7. Allow the system to circulate for a minimum of 4–6 hours before retesting calcium hardness.
8. Do not re-dose until testing confirms the first addition has been fully distributed. Do not increase CH by more than 100 mg/L in any 24-hour period.
9. Dispose of the empty bucket contents by diluting into the pool or waste collection — do not pour concentrated solution onto garden beds, lawn, or into stormwater drains.

Direct Pool Addition Method (Alternative — Granule Application)

1. This method is suitable only for small doses (less than 500 g per application in pools greater than 50 m³) and is not recommended for vinyl-lined or fibreglass pools.
2. Ensure pool pump is running at full circulation.
3. Broadcast granules evenly across the pool surface in the deep end, distributing while walking around the pool edge. Do not concentrate the dose in one spot.
4. Do not allow swimmers to re-enter the pool until the granules have fully dissolved and water has circulated for a minimum of 4 hours.
5. Retest after circulation — if white residue or cloudiness persists after 6 hours, check pH and total alkalinity, as excessive carbonate hardness may cause calcium carbonate precipitation.

Dust Suppression Solution Preparation (30–35% w/v)

1. Use a 1,000 L or larger HDPE IBC or purpose-built chemical mixing tank with a mechanical agitator. Ensure the tank is rated for corrosive solutions.
2. Fill the mixing tank to 60% of target volume with clean water.
3. Start the agitator or recirculation pump.
4. Slowly add calcium chloride solid to the circulating water. For a 30% w/v solution in 1,000 L: add approximately 300 kg of product to approximately 700 L of water. Adjust for 77% grade product accordingly (300 kg ÷ 0.77 ≈ 390 kg of 77% product).
5. Monitor solution temperature — allow to cool before transfer. Do not exceed 50°C during preparation.
6. Top up to final volume with water once dissolution is complete. Stir for a further 10 minutes.
7. Transfer to application tanker via chemical-rated pump and hose. Label clearly with contents, concentration, and date of preparation.

Chemical Compatibility

Compatible With

• Water (all temperatures — note exothermic dissolution)
• Most pool sanitisers at correct dilution (chlorine, bromine, TCCA — when separately applied and not mixed in dry form)
• HDPE, polypropylene, PVC, PVDF, fibreglass, and rubber — suitable for storage and handling equipment
• Stainless steel 316L and 304 for brief contact; not recommended for prolonged immersion in concentrated solutions without corrosion inhibitor
• Concrete and masonry (dilute, applied solutions)

Incompatible With — Do NOT Mix