Pakistan's natural resources range from natural gas reserves, vast land, coal, petroleum, copper, salt and iron ore among others. It has the second largest salt mines in the world, as well as worldâs fifth largest gold mines.
Leslie's 14427 Hardness Plus, 25 lbs. Leslie's 14428 Hardness Plus, 45 lbs. Keep your calcium hardness at proper levels at all times to help protect your pool, water, and pool equipment. The calcium hardness level in a pool does not increase rapidly, but it is good practice to check the calcium hardness every month. Adding 1-1/4 pounds of hardness plus to 10,000 gallons of water will raise the calcium hardness by 10 ppm. **The minimum level of Calcium Hardness is 150 ppm.
When your pool water is too soft, you can raise it by adding Calcium Chloride, or the less common Calcium Carbonate. Commonly, this is sold under many brand names - commonly referred to as Calcium Hardness Increaser. You could also use a snow melt product, but make sure it is 100% Calcium Chloride or Carbonate. Always read the package instructions, but generally speaking, adding at a rate of 1 pound per 10,000 gals of water will raise your pool Calcium Hardness level by 10ppm.