Calcium Hardness Increaser - 50 Lb. Bag filter-internal-diameter_4 1/16 inches Grab rails provide a hand

Grab rails provide a hand grip for built-in steps or in-wall pool ladders and are used to keep racing lanes free of obstructions when used in conjunction with the built-in steps

it is too alkaline and causes scaling

This Stenner chemical pump #85MJL1A4STAA provides reliable chemical feeding for your swimming pool

They have a modern foam core

The Aquabot Magnum pool cleaner with PVA brushes is designed for pools up to 80 feet in length and features the AquaSmart System

Calcium Hardness Increaser - 50 Lb. Bag filter-internal-diameter_4 1/16 inches Grab rails provide a handThis is a 50 pound bag of calcium hardness increaser which will raise the total the calcium hardness in your swimming pool water. This calcium chloride product is in granular form. For most pools, calcium hardness levels should be maintained between 200 and 400 ppm. Active Ingredient of the Harness Increaser: 100% Calcium Chloride. Directions for Adding Harness Increaser to Your Swimming Pool: If calcium levels are low, add this product directly to