Pebbles will be put first in the bottom mesh then Riccia fluitans on top. Then it will be covered with top mesh. It should sink at the bottom of tank and let it grow. Still in plan as I don’t wanna disturb the tank. Might look for additional 1.5g tank as it comes very cheap but hard to find. I guess this mesh can be used good with some other moss as well. Maybe.
Few-Arm7602 
Awesome! Does it sink, or will you have to put some rocks on top?
Pebbles will be put first in the bottom mesh then Riccia fluitans on top. Then it will be covered with top mesh. It should sink at the bottom of tank and let it grow. Still in plan as I don’t wanna disturb the tank. Might look for additional 1.5g tank as it comes very cheap but hard to find. I guess this mesh can be used good with some other moss as well. Maybe.
Material is ABS.