Product Description
Specially designed sintered glass medium, with an enormous surface area of 18,300 sq. ft. per U.S. gallon.This highly-porous rock material promotes biological water purification and eliminates toxic ammonia and nitrite.
Specially designed sintered glass medium, with an enormous surface area of 18,300 sq. ft. per U.S. gallon. This highly-porous rock material promotes biological water purification and eliminates toxic ammonia and nitrite. For saltwater and freshwater use. Suitable for all EHEIM external filters. One liter equivalent to 2 lbs.; two liter equivalent to 4 lbs.
When changing filter material, mix 1/3 of the used medium with new medium to achieve rapid repopulation of bacteria. Substrate may be washed with lukewarm water and be used several times. Before initial use, rinse thoroughly.
