Undergravel Filters

Browse our range of aquarium undergravel filters online. Undergravel filters are a very traditional way of filtering your aquarium fish tank, used since the 1950's to effectively filter aquarium tank water.

Undergravel filters are supplied as plates that sit along the aquarium floor underneath aquarium gravel. By introducing air bubbles into the uplift tubes, suction is created under the gravel, turning your aquarium substrate into an effective mechanical and biological filter.

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