Physical Characteristics: Color: Multi color Density: 100 pounds per cubic foot Description: Mesh size 1/8-2 1/2 inch Crystal Quest Support Gravel is the lower strata of a filter bed, and acts to support the filter medium. The maximum efficiency, the support gravel must possess the necessary attributes of hardness and be rounded or non-angular. Correct gradation and sizing must be calculated to properly support the filter media. * If preferred, you can purchase this from your local hardware store to save on high shipping cost. Type is pea gravel described as 6-8 or in measurement size of 3/8”. Rinse gravel off before installing. For full whole house 1.5 and 2.0 cu. ft. tanks approximately 17-20 lbs. and approximately 10-11 lbs. for quantity in Eagle 1000 units.
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