Subwassertang or Süsswassertang is a very unique aquatic plant. It resembles a liverwort, but is actually a fern with fragmented structures that are only a single cell layer! It's very easy to grow and is great for hiding fry and shrimp. This plant can grow from bits that break off it.
Co2: Not needed.
Best Placement: Attach to rock/driftwood or leave floating.
Comes as a golf-ball sized portion.