sera Spirulina Tabs is the herbal food for mainly herbivorous fish and invertebrates in fresh and marine water. The carefully manufactured tablets sink to the bottom or may be attached to the aquarium glass by slight finger pressure. This allows for watching even shy fish excellently while they are eating. The particularly high amount of Spirulina algae (27%) supports healthy digestion and liveliness. The balanced food supports healthy development splendid appearance as well as the natural behavior of the animals.