HTH Soda Ash 500g

HTH Soda Ash 500g is a fast-dissolving concentrated sodium carbonate powder designed to raise and stabilise the potential hydrogen levels in swimming pool water.

Maintaining a balanced chemical profile is essential for ensuring maximum sanitiser efficiency, preventing equipment corrosion, and providing a comfortable swimming environment by reducing the risk of skin and eye irritation.

Technical Specifications and Features

• • Contains ninety-nine percent pure sodium carbonate in a fine, anhydrous granular form for rapid solubility and immediate water chemistry adjustment.
• • Formulated with an alkaline potential hydrogen level of approximately eleven point five to effectively neutralise acidity in large bodies of water.
• • Supplied in a convenient 500g resealable pack, providing a precise quantity for small to medium residential pool adjustments.
• • Acts as an essential chemical buffer to prevent rapid fluctuations in potential hydrogen, especially after heavy rainfall or high swimmer loads.
• • Compatible with all pool sanitising systems, including standard chlorine granules, floaters, and modern saltwater chlorinators.

Ideal Use and Instructions

• • Specifically recommended for use in marbelite and concrete pools where acidic water can leach minerals from the surface and cause staining.
• • Before application, use a test kit to confirm that the potential hydrogen level has fallen below seven point two.
• • Measure the required amount based on your pool volume; generally, five hundred grams will raise the level by zero point two in a fifty thousand litre pool.
• • Pre-dissolve the powder in a clean plastic bucket of pool water before pouring the solution evenly around the deep end of the pool.
• • Keep the pool pump running for at least four hours after adding the treatment to ensure complete circulation before re-testing the water.

Safety Precautions

• • This product causes serious eye irritation; always wear protective eyewear and gloves when handling the concentrated powder or solution.
• • Do not inhale the fine dust particles during pouring and ensure you are working in a well-ventilated outdoor area.
• • Store the container in a cool, dry place securely away from children, pets, and acidic chemicals to avoid accidental reactions.
• • If contact with skin or eyes occurs, rinse immediately with clean water for several minutes and seek medical advice if irritation persists.

Frequently Asked Questions

• • Can I use this in a fibreglass pool? It is not recommended for fibreglass or vinyl-lined pools; HTH Alkalinity Up is a safer choice for those specific surfaces.
• • Why did my pool water turn cloudy after adding it? Cloudiness is often a temporary reaction with calcium in the water; simply keep the filter running until the water clears.
• • How long must I wait before swimming? You should wait at least two to four hours for the chemicals to circulate and ensure the potential hydrogen has stabilised within the safe range.
• • Is it the same as baking soda? No, soda ash is much more alkaline and is used for significant shifts in potential hydrogen, whereas baking soda primarily affects total alkalinity.

Pro Tip for Local Pool Care

• • During the rainy season, keep a pack of HTH Soda Ash 500g on hand as an emergency treatment for after-storm maintenance.
• • Large volumes of rainwater are naturally acidic and will rapidly drop your pool's potential hydrogen, which can turn your water green overnight if not corrected immediately with a quick-dissolving alkaline boost.