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Product name： Under Gravel Filter x1 (19.9x14cm / 7.8"x5.5") D625
Description
The Flow Under gravel Filter is a biological filtration system for fresh or saltwater aquariums. The filter circulates water through the gravel bed and oxygenates it for beneficial bacteria growth.
Caring Guide: At least 1~2 inches of washed gravel should be placed on top of the filter plate before water is added.
