NQA
European Commission project  for your
afm logo of dryden aqua active filter media

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Environmental & sustainable water treatment to save the planet
Trade marked and Patented
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Large seawater lagoons and lido systems now possible with the minimum of filtration when ACO, NoPhos and APF products are used to treat the water.   Perfotmance factor of public swimming pool systems reduced to less than 2 giving an 80% to 90% reduction in chlorine consumption.
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grade

mesh size

size

function

grade 3

 

2mm to 6mm

used to fill space  below laterals

grade 2

8 x 6

1mm to 2mm

used to cover base and laterals

grade 1

16 x 30

0.5mm to 1.1mm

main filtration media

grade 0

30 x 60

0.25mm to 0.5mm

used for ultra fine filtration