Product Selection Guide

Industry accepted standards for water quality in swimming pools recommend that filtration equipment is able to turn over the entire body of water within these time periods.

Swimming pool Domestic: 6 Hours
Swimming pool Commercial: 4 Hours
Spa pool Domestic: 1 Hour
Spa pool Commercial: 1/2 Hour with a 1 hour filtration cycle after bathing

Actual operating time per day is dependent on debris load, number of bathers and sanitation method.

Davey has made product selection easy by labeling their equipment with flow rates for average operating pressures, and converted these with domestic swimming pools turnover rates into a simple table.

To select the right equipment for your pool, follow steps 1,2,3 and 4

1. Calculate your pool volume.

The formula below requires all dimensions to be in metres. If the depth of the pool varies, the average depth should be used.

RECTANGULAR POOLS
length x width x depth x 1000 = volume in litres

ROUND POOLS
diameter x diameter x depth x 785.5 = volume in litres.

Rectangular above ground pools.

4.9m x 3.7m x 1.2m = 22 000 litres (16’ x 12’ x 4’)

6m x 3.7m x 1.2m = 27 000 litres (20’ x 12’ x 4’)

7.3m x 3.7m x 1.2m = 32 000 litres (24’ x 12’ x 4’)

9.8m x 3.7m x 1.2m = 44 000 litres (32’ x 12’ x 4’)

5.8m x 4.5m x 1.2m = 31 000 litres (19’ x 15’ x 4’)

8.2m x 4.5m x 1.2m = 44 000 litres (27’ x 15’ x 4’)

9m x 4.5m x 1.2m = 49 000 litres (30’ x 15’ x 4’)

Circular above ground pools

3.7m x 0.9m = 10 000 litres (12’x3’)

4.5m x 0.9m = 14 000 litres (15’x 3’)

4.5m x 1.2m = 19 000 litres (15’ x 4’ )

5.5m x 1.2m = 29 000 litres (18’ x 4’)

6m x 1.2m = 34 000 litres (20’ x 4’)

6.7m x 1.2m = 42 000 litres (22’ x 4’)

Rectangular in-ground pools.

6m x 3.7m x 1.4m = 31 000 litres (20’ x 12’ x 4’6”)

7.3m x 3.7m x 1.4m = 38 000 litres (24’ x 12’ x 4’6”)

9m x 3.7m x 1.4m = 47 000 litres (30’ x 12 × 4’6’)

9m x 4.5m x 1.4m = 57 000 litres (30’ x 15 × 4’6”)

12m x 4.5m x 1.4m = 76 000 litres (40’ x 15’ x 4’6”)

12m x 6m x 1.4m = 101 000 litres (40’ x 20’ x 4’6”)

15m x 7.5m x 1.4m = 158 000 litres (50’ x 25’ x 4’6)

1.4m (4’6”) = average depth

2. Selecting the right size pump or filter

Inground swimming pools

Note: It is possible to use larger sized cartridge filters to minimise the element cleaning required.

Above ground swimming pools

3. Selecting the right filter type

THE DIFFERENCE BETWEEN FILTERS
The difference between sand and cartridge filters is basically a choice between water saving, and water clarity.

For example; 1 micron being the clearest water.

Sand Filter with Sand media :15-20 micron

Cartridge Filter: 7- 10 micron

D.E Filter: 5- 7 micron

Sand Filter with Zeolite media – 3 micron

Basically, you have 2 choices in Filtration.
A) Water Clarity & B) Water Saving

A) WATER SAVING FILTRATION
FILTER CARTRIDGE – COMPUPOOL SERIES
CARTRIDGE – COMPUPOOL SERIES
SALT WATER CHLORINATOR – COMPUPOOL SERIES 
POOL BLANKET & ROLLER – (50% SAVING ON WATER EVAPORATION)

B) WATER CLARITY FILTER
FILTER CARTRIDGE – COMPUPOOL SERIES
CARTRIDGE – COMPUPOOL SERIES
SALT CHLORINATOR – COMPUPOOL  SERIES 
ZEOLITE – MINERAL FILTER MEDIA (POROUS 1 MICRON)
NATURE 2- MINERAL DISPENSER (REDUCES CHLORINE)
POOL BLANKET & ROLLER – (50% SAVING ON WATER EVAPORATION)

Recommended Chemicals For Pristine Water Clarity

1. Super shine

2. Gel cube

3. Starver

4. Clarifier

4. Selecting the Right Sized Chlorinator

Maximum pool volume for chlorinators