Boyd Chemi-Pure Elite - 11.74 oz Flea & Tick They’re spring-leaded which allows them

They’re spring-leaded which allows them to expand and retract from 10

With one half of the device on the outside and half on the inside

Anemone Head

Designed for use in both freshwater and saltwater aquariums

just remove

Boyd Chemi-Pure Elite - 11.74 oz Flea & Tick They’re spring-leaded which allows themChemi Pure Elite 11. 74 oz Great for freshwater, marine, and reef aquaria, Boyd Chemi Pure Elite is a specially formulated chemical absorption filter medium, ion generator, and exchange unit. This safe and effective filter media helps: create crystal clear aquarium water, stabilize pH levels, reduce frequency of required water changes, promote aerobic bacterial growth, remove dissolved organics, and much more! This powerful agent also contains Ferric