Adjusting Total Alkalinity, total alkalinity in pools, PoolBoss Alka Plus, CheapHotTubChemiicals.com, cheap swimming pool chemicals

Low Calcium Hardness will cause pool water to become aggressive. It will eventually lead to etching of pool equipment & surfaces, including vinyl, plastics & stainless steel.

High Calcium Hardness will cause cloudy or hazy water especially when the water temperature goes over 85° F. Left alone, high CH (over 300 ppm) will cause scaling of pool surfaces & equipment. Dilution by adding fresh, lower CH water to the pool is the only way to correct High CH.

Increasing Calcium Hardness in Your Pool
Test Results	YOU NEED	Pool Volume in U.S. GALLONS
Test Results	YOU NEED	7,500	10,000	12,500	15,000	17,500	20,000	22,500	25,000	27,500	30,000
50 ppm	Cal-Plus	15 lbs.	20 lbs.	25 lbs.	30 lbs.	35 lbs.	40 lbs.	45 lbs.	50 lbs.	55 lbs.	60 lbs.
100 ppm	Cal-Plus	9 lbs.	12 lbs.	15 lbs.	18 lbs.	21 lbs.	24 lbs.	27 lbs.	30 lbs.	33 lbs.	36 lbs.
150 ppm	Cal-Plus	4 lbs.	6 lbs.	7.5 lbs.	9 lbs.	10.5 lbs.	12 lbs.	13.5 lbs.	15 lbs.	16.5 lbs.	18 lbs.
200 ppm	Good Range! Vinyl/Fiberglass Pools: 200 - 250 ppm Concrete/Gunite Pools: 250 - 300 ppm
250 ppm
300 ppm
Over 350 ppm	Calcium Hardness too high, cloudy water and / or scaling may occur. Draining SOME water will help. Never completely drain your pool. Serious damage will occur.