I have a 2217 hooked up to a 10 gallon normal intake and DIY spray bar. I noticed in the original spray bar the current was to strong. So I made a DIY stay bar over the tank. That sprays onto the water not in the water creating a current flow for the shrimp.
Another suggestion is get a quarter turn valve to attach to out put hose and reducing the water flow that way.
Another suggestion is get a quarter turn valve to attach to out put hose and reducing the water flow that way.