No mention is made of the simpler method of filtration using AFM (active filtration media) which is a recycled product based on glass bottles and unlike sand does not get colonised by bacteria. This produces clear water in 99% cases and is used after settlement.
Published by Don Sharpe
No mention is made of the simpler method of filtration using AFM (active filtration media) which is a recycled product based on glass bottles and unlike sand does not get colonised by bacteria. This produces clear water in 99% cases and is used after settlement.