AQUALIN® is used especially for multi-layer filtration. For multi-layer filtration different sizes of AQUALIN® are used in combination with AQUAGRAN® filter quartz. The coarser filter coal will be on top and the fine filter quartz below.
AQUAGRAN® filter quartz and AQUALIN® filter coal are both natural materials. The quartz gravel is clearly washed, exactly classified and not stone-broken.
AQUALIN® is natural lignite which is broken, clearly washed, thermally processed and classified.
AQUALIN® possesses about a relative hardness.
- optimal for multi-layer filtration because of the low bulk density
- used for multi-layer filtration, AQUALIN® provokes a long durability of the filter
- AQUALIN® is chemically pure carbon with a rate of more than 90 %, because of that there is no release of silica acid to the water
- no adhesion of deposited iron and manganese compounds, because of the specific chemo-physical surface
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