Water Chemistry
GENERAL
Recommended Levels
Fiberglass Pools
Fiberglass Spas
Other Pool & Spa Types
Water Temp.
68 to 88°F (20 to 31°C)
89 to 104°F (31 to 40°C)
68 to 104°F (20 to 40°C)
pH
7.3 to 7.4
7.3 to 7.4
7.6 to 7.8
Total Alkalinity (PPM)
120 to 150
120 to 150
80 to 120
Calcium Hardness (PPM)
200 to 300
150 to 200
200 to 400
Salt (PPM)
4500 MAXIMUM
4500 MAXIMUM
4500 MAXIMUM
Free Chlorine (PPM)
2
2 to 3
2 to 3
2 to 3
Total Dissolved Solids (PPM)
3000 MAXIMUM
3
3000 MAXIMUM
3
3000 MAXIMUM
3
For your health and the protection of your pool equipment, it is essential that your water be chemically balanced
1
.
The following levels must be used as a guide for balanced water.
1
Damage from corrosive water is not covered under warranty. Consult your product manual for more information.
2
Free Chlorine MUST NOT EXCEED 5PPM.
3
In salt water chlorinated pools, the total TDS can be as high as 6000PPM.
• Occasional chemical shock dosing of the pool or spa water should not damage the heater providing the water is
balanced.
• Automatic chemical dosing devices and salt chlorinators are usually more efficient in heated water, unless controlled,
they can lead to excessive chlorine level which can damage your heater.
• Check valve should be installed between the heater outlet and a chlorinator or other chemical dosing device.
• Further advice should be obtained from your pool or spa builder, accredited pool shop, or chemical supplier for the
correct levels for your water.
• Warning: Electrolytic Corrosion and pH instability may be present with salt chlorinated pools.
2
