Garnet is a high hardness, high density granular filter media. It is normally used as the lower (final) filtration in a multimedia bed down flow filtration system.
A properly designed multi-media system will maintain its unique grading of large grains on top and small grains on the bottom and provide superior performance even after many back-washings. This stable condition of large grains above finer ones is achieved by the use of materials of different sizes and specific gravities. Garnet with its high specific gravity of 3.9 forms the lower fine grain layer, its 0.3 mm effective size can filter down to the 10-20 micron range. Filter Sand, (effective size of 0.5 mm) and Anthracite, (effective size of 0.9 mm) can form the larger, less dense layers
Available in two grades:
Garnet A = coarse
Garnet C = fine