Haviland Durachlor Hardness Increaser Size:50 lb you’ll add chemicals less frequently

you’ll add chemicals less frequently and enjoy steadier water chemistry

Six-Position Valve with Positive Lock: precise mode selection and secure operation during maintenance

and fountains

EZ Spa Start removes phosphates

Simple dosing and routine: straightforward instructions fit weekly treatments alongside your sanitizer

Haviland Durachlor Hardness Increaser Size:50 lb you’ll add chemicals less frequentlyThe Durachlor Hardness Increaser product is used to raise the total calcium hardness level in swimming pools. If proper calcium levels are maintained you can prevent the etching, pitting, and similar problems to the surfaces of plaster, masonary, and concrete pools. Raises calcium hardness levels Prevents surface corrosion Chlorine based