Sealed moss plant on wire mesh.
Fissidens crispulus, also known as zipper moss, is an uncommon moss which can grow under water and on wet surfaces. It requires bright light with CO2 and frequent dosing for it to thrive in an aquarium. As with other moss, Fissidens crispulus can be grown on porous hardscape materials such as wood or lava rocks without the requirement of soil or substrate.
This plant arrives sealed in an airtight flat bag and grown on a 5×5 cm mesh.