need help on pico

[scottallert]

Im making a pico and i am stuck..
how do i create flow but not to much flow, i just want sexy shrimp, and rics or gsp.
thanks

 

[zshain012]

What size? Idk really know the answer to this one because powerheads have too much flow. Hmmm...maybe an airline?

 

[scottallert]

size...like 400ml

 

[freeborder_01]

someone made a 400ml tank i think. If thats one thats like the size of a soda can. He used a straw with holes cut in it and a airpump i think