AC Moore, Jo Ann Fabric, Michaels -- They all have plastic needle point "mesh" in different sizes that you can buy. If you want to tie them down to wood or rock, get the black mesh that is similar to the wedding gown bride's veil fabric. They come in different netting density. I got mine from Jo Ann's. The stuff is almost invisible when wrapped to drift wood.
You may be able to get away with normal wire mesh in a plants only tank. The rust will provide a small amt. of iron for the plants to grow.
You may be able to get away with normal wire mesh in a plants only tank. The rust will provide a small amt. of iron for the plants to grow.