Is a bubble maker necessary for a shrimp tank?

[Carlo]

Hey all! I was just wondering what your opinions were about a bubble maker for a shrimp and dwarf crayfish aquarium. I have successfully kept shrimp for a long time without bubbles, but I've seen mixed reviews about crays though. Any opinion will be gladly appreciated.

[zapisto]

i cannot see what bubble give , that you cant get an other way.
for me i would say buble are Not necessary.

buble make nice filter tho