Ocean Free Rectangular Cata-Pure Cartridge for Hydra 30 Supplements & Treatments Getting rid of these compounds

Getting rid of these compounds produces crystal clear water

Perfect for use with Exo Terra Terrariums

large aquariums

Two AquaBus connectors for flexible expansion via AquaBus

Pellet portions and feeding times can be adjusted depending on the size or quantity of turtles

Ocean Free Rectangular Cata-Pure Cartridge for Hydra 30 Supplements & Treatments Getting rid of these compoundsThe Cata Pure Cartridge can last 9 12 months depending on the amount of fish and is functional in marine environments. Rectangular cartridge for the Hydra 30 (The square cartridge for the Hydra 30 is available here). *HYDRA 30 NOTE: Please check your cartridge before purchase. Some have the square, some have the rectangular. Model Number of Cata Pure Hydra Filtron 1000 2 Hydra Filtron 1500 3 Hydra Filtron 1800 4 Hydra 20 1 Hydra 30* 1 (or 1 square*)