Description
AFM (Active Filtration Media) grade 3 is used as a pea gravel equivalent support media for grade 2., 1 and grade 0. Sufficient grade 3 should be used in all pressure filters to cover the laterals or support plate to a depth of at least 100mm.
Supplied in 25kg sacks, grade 3 particle size 2.0mm to 6.0mm.
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