Like MKM a lot there pricing is good their time of delivery is excellent and for me they are NC based
CALCIUM HARDNESS INCREASER – Calcium Chloride
- Low water hardness could stain or etch the pool surface and corrode equipment.
- Calcium Hardness Increaser raises water hardness level.
- Prevents foaming and equipment corrosion.
- 6 pounds of Calcium Hardness Increaser per 10,000 gallons of water will raise calcium hardness level by 50 ppm.