I am using a Eheim Biopower 160 in my 80 litre shrimp tank,with the Intake covered with a piece of tights.
I have seen the baby shrimp on the filter mesh and watched them swim away,The Biopower is on its Minimum setting.
Thinking about buying another one for my new 55 litre shrimp tank.And selling the Eheim 2008 that the tank comes with.