can you make a moss wall from riccia? or even like a carpet? if so how do you do it and what all do i need? id like to either make a carpet or a wall in my 10. which would look better with riccia, and how fast does riccia grow?

I've heard about carpets being made by
Tying riccia to a rock with a hairnet or fishing line and let it grow. Or you can use any kind of mesh ect.

I don't think a riccia wall would work because the riccia at the bottom wouldnt be getting enough light ie you would have to angle your light towards the wall.

I don't think a riccia wall would work very well either, also when riccia grows long bits break off very easily. After a while you would likely have lots of riccia floating around the top. To get a riccia carpet is really easy, just secure some riccia to some flat stones or stainless steel mesh. A lot of people use hair nets and such to attach riccia. I just used cotton thread and its working out just fine, the riccia covered it up and you can's see the thread anymore.

can i use fishing line? wont thread eventually just rot off and then the riccia will float?

Yeah I've seen fishing line work, I like the idea of rock-riccia-mesh-fishing line. Seems more secure and it looks like it works

so ill need mesh AND fishing line? where can you get hair nets?

Idk, lol any kind of mesh will work, you probably could just get away with just fishing line