Section 4. Pool Water Preparation; Determining Pool Size (Gallons Of Water In Your Pool); Determining Pool Size (Litres Of Water In Your Pool); Selecting Cartridge Size - Nature2 Fusion Inground Manual De Instalación Y Funcionamiento

Section 4. Pool Water Preparation

4.1 Determining Pool Size (Gallons of Water in Your Pool)

• Rectangular Pools
Average length (feet) x average width (feet) x average depth (feet) x 7.5 = gallon capacity.
• Circular Pools
Diameter (feet) x diameter (feet) x average depth (feet) x 5.9 = gallon capacity.
• Oval Pools
Long diameter (feet) x short diameter (feet) x average depth (feet) x 5.9 = gallon capacity.
• Sloping Sides
Multiply total gallons by 0.85 = gallon capacity.

4.2 Determining Pool Size (Litres of Water in Your Pool)

• Rectangular Pools
Average length (meters) x average width (meters) x average depth (meters) x 1000 = litres capacity.
• Circular Pools
Diameter (meters) x diameter (meters) x average depth (meters) x 790 = litres capacity.
• Oval Pools
Long diameter (meters) x short diameter (meters) x average depth (meters) x 790 = litres capacity.
• Sloping Sides
Multiply total litres by 0.85 = litres capacity.

4.3 Selecting Cartridge Size

For Pools up to 25,000 gal
(95,000 L)
DuoClear ® 25 or Nature 2 Fusion 25
#W28000 (single)
#W26000 (4-pack)
General Rule of Sizing: In areas with year-round use and high water temperatures, such as Florida, Texas, Arizona,
Las Vegas and Southern California, the following must be considered:
High Water Temperatures: Because chlorine demand increases with the rise of water temperature, adjustments must
be made in order to keep up with chlorine demand. In hot summer months, where the water temperature rises above
85ºF, you must increase the pump run time and increase the chlorine output.

4.4 Chemistry You Need to Know

• Chlorine Stabilizer (cyanuric acid) is needed to maintain proper levels of chlorine. Most non stabalized chlorine
is destroyed by the UV radiation from the sun within two (2) hours. Chlorine stabilizer should be maintained
between 10 - 50 PPM. The addition of chlorine stabilizer is not necessary for indoor pools.
• Nitrates can cause extremely high chlorine demands and will deplete chlorine from your swimming pool. In some
cases nitrates may even lower your chlorine levels to zero. Your local service representative can test for nitrates.
Make sure nitrates are not present in your pool.
• Metals (some metals) can cause loss of chlorine. Also, metals can stain your pool. Have your local service
representative check for metals and recommend methods of removal.
• Chloramines should not be present in pool water. When organic materials combine with free chlorine,
chloramines are formed. This ties up the free chlorine in your pool and does not allow the chlorine in your pool to
disinfect. Chloramines also cloud pool water and burn the eyes. Shock to remove chloramines at the initial startup
of the pool.
Nature 2® Fusion Inground Installation and Operation Manual
For Pools up to 35,000 gal
(135,000 L)
DuoClear 35 or Nature
#W28001 (single)
#W26001 (4-pack)
For Pools up to 45,000 gal
(170,000 L)
2 Fusion 35 DuoClear 45 or Nature
#W28002 (single)
#W26002 (4-pack)
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2 Fusion 45