Master Clear Spa Hardness Up Increases Water Hardness To Help Prevent Corrosion and Staining.
Master Clear Spa Hardness Up 32 oz – Liquid Hardness Increaser Raises the Calcium Hardness level in your spa water. The ideal total hardness level in your spa or pool should be between 200 & 400 ppm. Spa Hardness Up is pre-dissolved as a liquid for easier dispersal in your spa & quicker absorption. Water hardness will also decrease brittle plumbing & jets, increasing the life of your spa.
