Pool Opening Chemical Treatment

Day 1

1. Add Stain and Scale Control (100 mL per 10,000 L of pool water) by slowly pouring it around the perimeter of the pool water. Wait 1 hour to let it circulate.
2. Shock the pool with non-chlorine based Oxidizer (1 kg per 75,000 L of pool water) and then wait 3 hours.
3. Balance the pool water to:

• pH: 7.2 – 7.6
• Calcium hardness: 200 – 350 ppm
• Total alkalinity: 80 – 120

If applicable, install your Nature II cartridge. Note: You must replace the Nature II Cartridge at the start of each season.

4. Establish the recommended sanitizing level by applying an unstabilized granular or liquid chlorine

Add HTH Extra: broadcast 65g per 10,000 L. Test after 10 minutes, and if levels are below 1.0 ppm, repeat until 1.0 ppm is obtained.

OR Add Unstabilized Liquid Chlorine: add 1 L of liquid chlorine per 10,000 L of pool water. Test after 10 minutes: if levels are below 1.0 ppm, repeat until 1.0 ppm is obtained.

Day 2

1. Add 40% Algaecide (100 mL per 10,000 L of pool water) by slowly pouring it around the perimeter of the pool water. Wait 1 hour to let it circulate.
3. Start up the chemical feeder on its medium setting. Wait 24 hours, then test your water and adjust chemical feeder output as necessary.