This substrate can be used with an under gravel filter if the substrate is larger than the mesh size of the under gravel filter.

Pure Water Pebbles Bio-Activ Live African Cichlid Aquarium Substrate, 20-lb bag

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This substrate can be used with an under gravel filter if the substrate is larger than the mesh size of the under gravel filter.

By on Jul 19, 2021 Report

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