Calcium Hardness 8KG $34.77 Calcium Hardness 8KG quantity Add to cart Category: Pool Chemicals Related products Natural Clear ™ Clarifier – 1L $19.77 Add to cart Oxy-Out – 7KG $89.77 Read more Bromine Tablets – 18KG $365.00 Select options pH Plus – 2KG $19.77 Add to cart