[ReptiZoo] Aquatic Reptile Corner Internal Filter (suitable for terrapin, fish and shrimps)

This internal aquarium filter fits corners and has a 3-stage biological filtration system. It is suitable for shallow water tanks and provides quiet operation and easy maintenance.

• The description claims the filter improves water cleanliness and reduces odors.
• The description claims the filter operates quietly at under 35 dB.
• The description claims the filter requires a minimum water level of 1.4 inches.
• The description claims the filter should have its cartridge replaced once a month.