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.
Before you go clicking the âXâ button on me, let me explain. Salt Chlorinators use table salt to chlorinate your pool water. You see, when water that contains sodium chloride (salt) has a small electric current applied to it, the salt converts into chloride ions and then into chlorine gas.s with any salt chlorinator, youâll want to ensure that it is installed last on your return line, after your pump, filter and heater. The Jandy AquaPure 1400 Salt Chlorinator is a great choice for pools from 12,000 to 40,000 gallons, provided you can reduce the calcium in your water.