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Hardness Plus (Calcium Chloride)

Star Rating of 5

Hardness Plus is used in soft water to increase the calcium levels within the water

Print Product Information

6 x 1kg Hardness Plus

Please select from the options below:

Product NameRRPOur PriceAvailabilityQuantity
5kg Hardness Plus£23.22£10.00In Stock
25kg Hardness Plus£92.88£37.50In Stock
4 x 5kg Hardness Plus£92.88£40.00In Stock

Delivery Lead Time: Next Day Delivery

Product Information

Hardness Plus (Calcium Chloride).

Your pool or spa water needs to have a Calcium Hardenss level of between 200ppm (mg/l) and 300ppm. Water with a lower calcium level (soft water) is likely to damage your pool equipment.

.Directions for Use:

  • 1. Use a Tesy Kit or ask your pool dealer to establish the Calcium Hardness of your pool or spa water. If below 200ppm proceed as follows:
  • 2. To increase the Calcium Hardness 10ppm add 15gms of Hardenss Plus per 1,000 ltrs of pool water. (700gms per 10,000 gallons of pool water).
  • 3. Make sure that the pool cover has been removed, the pool circulation is on and that the pool is not being used.
  • 4. Always pre-dissolve this product in a clean plastic bucket full of water. (Dilute at a rate of 100gms per 10ltr bucket). Pool water will cloud over temporarily when adding this product.






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We are now able to offer overseas delivery on most of our product range. Please look for the overseas delivery logo (insert logo here) on the product pages to find out if the product can be shipped abroad or not. If you require an order to anywhere within Europe then please give our customer service team a call on 0800 328 4150 or submit an enquiry through our contact us page along with your delivery address and full order details and we shall endeavour to calculate a price for you.

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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