For those of us with smaller tanks (5 gal) and no patience who just spend the extra money on carpet plants on mesh, can we just set those on top of the substrate? Or do we have to remove it from the mesh first? Will the mesh rust (if it's not plastic) and lower water quality? Would the same thing happen with plant weights? Will fish get injured on the mesh? Will the mesh end up killing the carpeted plants left on it, or will it still grow healthy? If you do buy the carpet mesh and absolutely have to remove it, what is the best/easiest way to plant it? Or is there just no quick way to do it and I have to plant in little patches throughout? Which is fine, of course, ultimately I just want something that looks good, but is still safe for whatever ends up going in there. Thanks in advance!