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Hi,

Just buy the 9,75'' x 2,5'' versions of a/m cartridges and they will fit into Digipure.

My personal favorite is this one :
http://www.filtersfast.com/KX-Matrikx-06-250-125-975-Filter.asp ...

The metallic taste probably comes from the bituminous carbon used with the KDF 55 Cartridge (iron contamination of the source carbon) ...this is a pretty common flaw of low-cost bituminous carbon...

I have a friend living in an area where the water is quite high in TDS ...around 4000 ppm...is this considered brackish water ?

Is it possible for him to install an RO unit for drinking water ?...

Hello and many thanks for your reply ,

My feed water has a TDS value of 140 ppm , therefore the RO water is around 3-4 ppm . I would like to raise it a bit (let's say around 20-25 ppm) , thus...

Hello everybody ,

I have a few questions about RO systems in general ...

1) mineral or calcite filters : which one is better as post treatment ? Or should i use both ? I've seen various...