Sera Crystal Clear Filter Medium Food added farm-raised spirulina algae and

added farm-raised spirulina algae and carefully chosen and tested vitamins and minerals as well as some extra natural ingredients carefully combined to promote health and encourage breeding

Their natural hunting instincts and engaging behavior make them one of the most entertaining freshwater fish available

They like to swim freely near the middle/bottom portion of the aquarium

5 inches in an aquarium

Sera Crystal Clear Filter Medium Food added farm-raised spirulina algae andHigh performance filter medium for mechanical filtration The innovative, patented 3D fiber structure of sera crystal clear Professional very quickly removes even smallest particles above 10 m (such as floating algae or sludge). Unlike common filter wool, the filter balls keep their shape and can be washed out several times. They are 80% reusable after washing out. The high performance filter medium is suitable for both freshwater and marine aquariums