Price includes post & packing.

Available in 1kg or 5kg tubs – see drop down menu above.

Hardness Plus (Calcium Chloride) - use to increase calcium levels of pool / spa water - your pool or spa water needs to have a Calcium Hardness level of between 200ppm (mg/l) and 300ppm. Water with a lower calcium level (soft water) is likely to damage your pool or spa equipment. Full usage and dosage instructions are given on the container. So if you live in a soft water area, this product could be for you.

Here we are offering Hardness Plus in a choice of 1kg or 5kg tubs from our own respected 'Discount Pool Store' brand at a discounted price giving you excellent value for money. This is a premium, quality product and should not be compared with cheap, inferior products. We have thousands of satisfied customers and you can buy with complete confidence.

Order yours today and we'll get it packed and posted and it will be with you in no time at all.