dont see why not, most shrimp farms in asia use bare bottom tanks I believe and ive seen a few vids of bare bottom shrimp tanks.
Gahh - acrylic! I'm a die hard acrylic hater. It scratches, it scuffs, it bends if it gets too warm on the car ride home. And now apparently it can't have lava rock.I was thinking on taking all the sand out and replacing it with several 3-4 large lava rocks. they have lots of surface area. Then I all would have to do it move the rocks. But when I looked up on painting the bottom of the tanks. I leaned that with acrlic it can have some nasty reactions.
Just use low light plant and make the tank that will fit your shrimp. Many people focus on what the tank looks like and not what the shrimp are getting. In a shrimp tank the less you do to it the better. I would advise, to have a substrate. They will do better if they are happy. Put a few low light plants, a bit of moss and don't touch it. BB can be done but why not make something suitable for the shrimp.I am setting up and redoing and giving one last try to my shrimp tanks. They always seem to get too complicated with tons of plants and driftwood and eventually planaria and die off. So i set up a couple of tanks with just moss and and sponge filter and some floaters and maybe a small piece of driftwood. Is there any reason this is bad idea? If the water parameters are ok is it still a bad idea?