Many aquarists keep floating riccia in their home ponds due to its incredible stamina. True, it is almost deprived of this property if the water is too soft. Best riccia develops in water of medium hardness, at 10 - 20 ° dH . The clusters of moss float just under the surface of the water and are thus very close to the source of illumination. And although they really need strong light, it often happens that the side turned towards the lamps will overgrow with algae. But usually the plant is so strong and multiplies so quickly that you can lose a significant amount of its green every week without any losses: otherwise those parts of the aquarium that are located directly below, will plunge into deep twilight. Riccia serves many types of fish as shelter, and various types of Anabas lay eggs in it. The plant tolerates almost any normal water temperature.