West Nashville 1.18.25 - Saturday (7 PM) Active (#175182590)

Robelle Calcium Plus is used to raise calcium hardness levels when measures drop below the recommended range of 200-400 ppm. If calcium hardness levels are too low the soft water will corrode pool equipment etch pool plaster and may cause metallic stains. This is a dry granular product that increases the total hardness in pool water to the recommended range. Directions for use Test for calcium hardness with a reliable test kit. The desired range for calcium hardness is as follows Vinyl Pools - 200-300 ppm. Tile and Exposed Aggregate Pools - 200-400 ppm. Marcite Fiberglass or Painted Pools - 250-400 ppm. If the calcium hardness tests less than the desired range add this product according to the guide below. Place this product into a plastic bucket already filled with swimming pool water. Do this in a ration of up to 2 lbs. of product per approximate 5 Gal. bucket of water. Slowly pour this solution around the perimeter of the swimming pool while the circulating system is operati