Attaching tablets with 24% spirulina for healthy digestion and liveliness sera Spirulina Tabs Nature is the veggie food without dyes and preservatives consisting of attaching tablets. It is excellently suitable for mainly herbivorous fish and invertebrates in fresh and marine water. The particularly high percentage of spirulina algae (24%) supports healthy digestion and liveliness. The balanced food supports healthy development, splendid appearance as well as appropriate behavior of the animals. The gently manufactured tabs sink to the bottom or can be attached to the aquarium glass by slight finger pressure. This allows watching even shy fish while they are eating.