Where water is acidic i.e. has a pH value below 7.0,
but the water is of clear appearance and has all other chemical
parameters within regulation limits, an ‘upflow’ filter
can be used to correct the acidity of the water.
The use of a simple filter operating on an upflow principle with
the filter holding a neutralising media is often a cost effective
method of treating the water.
This type of filter does
not incorporate a back wash facility and the water passes
down through the filters internal riser tube and comes
up through the media, passing out of the filter head and
into the system.
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