HTH 22008 Chlorinating Granules for Pools, 18 lbs

Sanitizes, Clarifies and Softens

The enhanced water-softening formulation guards against bacteria and other organisms, controls algae, and clarifies water to deliver brilliantly clear results.

Visible Blue Action

HTH Ultimate Mineral Brilliance Chlorinating Granules are fast-dissolving and feature Visible Blue Action, so you know they are working, to produce crystal-clear results in 24 hours.

Prevents Stain and Scale Formation

The HTH sanitizer formula also helps to prevent stains from forming and scale from building up. HTH Ultimate Mineral Brilliance Chlorinating Granules include a filter aid and are compatible with salt systems.

1. Test and Balance

Dip an HTH Multi-purpose 6-Way Test Strip (sold separately) into the water to measure total alkalinity, pH, free available chlorine (FAC), calcium hardness, and cyanuric acid (CYA) or stabilizer. Test the water and adjust alkalinity and other parameters where necessary.

2. Apply Directly to Water

Use a clean, dry scoop; do not use the scoop for other purposes. Add the recommended dosage during evening hours while the filter pump is running. Ensure that the product is broadcast evenly over a wide area in the deepest part of the pool.

3. Wait and Test Chlorine Levels

If granules settle along the bottom of the pool, use a brush to disperse them. Once free available chlorine levels are between 1 and 4 ppm, your pool is ready to use again.

Many factors work against the cleanliness of your pool. Sunlight breaks down the chlorine, causing the water to lose up to 5 ppm of chlorine in one sunny afternoon. Swimmers unintentionally release bacteria and contaminants like sweat, makeup and sunscreen. And storms can bring dust, pollen, leaves and algae spores. Shocking is one of the best ways to protect your pool water and keep it crystal clear.

In ideal circumstances, shocking your pool once a week will keep it looking clean and clear, but heavy rainfall, signs of algae, heavy use or long periods of sunny weather may require more frequent treatment. Sundown is the best time to shock your pool, so the chlorine can work to restore water clarity without the sun’s harsh ultraviolet rays. Brush the pool floor and walls to help expose settled contaminants to the chlorine.

First, brush the floor and walls of your pool to loosen the algae and break down the cells’ outer membrane to allow the chemicals to penetrate. Next, shock the pool with an HTH shock treatment, following label instructions. After 24 hours, use an HTH algaecide to treat the effected area, then brush the pool again. Keep the pump running overnight and continue to use the algaecide once a week to prevent future growth.