Plants require carbon for doing photo synthesis, which often is not available in the water in sufficient amounts. Lacking carbon is one of the most important growth limiting factors for aquatic plants.

Red or very quickly growing aquatic plants require particularly much iron. Iron deficiency therefore often occurs in densely planted and intensely lighted aquariums. The aquatic plants, however, require iron for developing their full color splendor and for growing healthily.

The main nutrients nitrogen, phosphorus and potassium are very important for the healthy growth of aquatic plants.

A good basis for successful plant care sera floredepot is placed underneath the actual bottom ground (sand, gravel) when setting up the aquarium.