Susswassertang (meaning "fresh water seaweed" in German) or Round Pellia, is a liverwort-like aquatic gametophyte used in the planted tan...Read Morek hobby. It consists of rootless and stemless leaves that form a clump and can attach themselves to wood or rock. The form found in the aquarium trade consists of only the male sex organ, and has never been coaxed into the fern form, causing many to believe it is a separate species. It is currently included in the L. lineata species, which is a tree dwelling fern when mature.
Susswassertang can survive in low light conditions, but reproduces best under high light with supplemental carbon, either through the use of a CO2 system or Excel. Some sources mention ill effects on the plant from the use of Excel, particularly shriveling. I have personally used Excel, though not a regular regimen, on all of my tanks with Susswassertang, and have experienced no ill effects. I would recommend testing on small segments of the plant before using in your own tank.
It is used like the aquarium mosses, as a ground cover or attached to driftwood or a stone. It is very unique in appearance, and resembles seaweed or the plastic grass sold for Easter baskets. It also makes an excellent cover for baby fish.
In high light conditions with sufficient carbon, the plant tends to form tight clumps. In lower light, it may float freely around the tank, clogging filter intakes and looking messy.
Overall, a beautiful, interesting, and somewhat rare plant for the planted tank enthusiast!
Susswassertang (meaning "fresh water seaweed" in German) or Round Pellia, is a liverwort-like aquatic gametophyte used in the planted tan...Read More