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7kg pH Minus (Dry Acid)

Star Rating of 5

pH Minus / Reducer / Decreaser (Dry Acid) in granule form to lower the pH level of water. Ideal pH is 7.4 - 7.6

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7kg  pH Minus

Please select from the options below:

Product NameRRPOur PriceAvailabilityQuantity
7kg pH Minus£23.88£8.95In Stock
2 x 7kg pH Minus£47.77£17.50In Stock
4 x 7kg pH Minus£95.52£34.00In Stock
25kg pH Minus£71.40£38.00In Stock

Delivery Lead Time: Next Day Delivery

Product Information

pH Minus (Sodium Bisulphate).

Dry acid for reducing the pH and Total Alkalinity of water. pH minus is used for reducing the pH of pool or spa ater. This product should be added to your pool or spa water if your Test Kit indicates that the pH is high.

Directions for Use:

  • 1. Test the pH of your pool or spa water daily. The pH of water should be maintained between 7.2 and 7.6.
  • 2. If your test kit reading indicates that the pH of your pool or spa water is higher than 7.6, add pH Minus at a rate of 10gm per 1000 ltrs of water. (eg if your pool contains 7,000 ltrs of water add 70gm of pH Minus). One heaped teaspoon holds approximately 9gm of pH Minus.
  • 3. Pre-dissolve in a clean plastic bucket filled with water.
  • 4. Ensure that the circulation system is running when adding the pH Minus.
  • 5. Slowly pour solution into water immediately above pool or spa return inlet.
  • 6. Test pH daily and repeat dose until test reading indicates the pH has reduced to 7.4.
  • 7. Never add product when pool or spa is being used; do not allow pool or spa to be used foir 30 minutes after adding pH Minus.






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Hazordous Material

Hazordous Product Warning

This product has been listed as a potentially hazardous product. This will usually be as a result of its chemical make-up. For more information on the exact chemical safety data please refer to our Swimming Pool Chemical Data Sheets areas within the downloads section. You will find the full information you require on this product however if there is further information you require please do not hesitate to contact our customer service team on 0800 328 4150 or technical department on 01747 839608.

What are Star Ratings?

Customer service is very important to us, and over the years we have spent lots of time talking to you, our customers, helping you decide which is the right product to purchase from our extensive product range.

To help we have come up with our innovating and unique star rating. This will help guide you to making a more informed choice of the best product to suit your individual requirements.

How we have calculated a star rating for the products is on its price, performance, life expectancy, warranties, customer feedback, environmental impact/efficiency.

Remember - Help us Help you. Go online and give us your views. All feedback good or bad is welcome. It will help us decide star ratings and ultimately whether or not we stock that product.

  1. Not Recommended
  2. Budget Product, reasonable performance, shorter life expectancy, limited warranties, low or no customer feedback.
  3. Good value for money, reasonable product, good performance, average life expectancy, average warrantees, good customer feedback.
  4. Recommended Product, Good value product, good performance, above average life expectancy, good warrantees, positive customer feedback, tried and tested over the years.
  5. Best Buy, Highly recommended, excellent value for money, high performance, long life expectancy, excellent backup / warrantees, positive feedback, typically a product that we have sold over the years from a highly reputable supplier.
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