Ocean Free Rectangular Cata-Pure Cartridge for Hydra 30 Supplements & Treatments and a spring-loaded swivel clamp

and a spring-loaded swivel clamp

these LED lights are available in 3 sizes to suit a wide array of aquariums

Perfect for use with Exo Terra Terrariums

large aquariums

then regenerate as HyperSorb™ or Purigen®

Ocean Free Rectangular Cata-Pure Cartridge for Hydra 30 Supplements & Treatments and a spring-loaded swivel clampThe 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*)