1 pump 4 bubblers???

How do I power 4 bubblers off 1 pump?

Is it just a matter of connecting a few 2 way splitters until I have 4 lines coming out?

That would work, as long as the lengths of tubing are the same.

You can purchase a splitter at any aquarium store, most have little dials so you can adjust the air flow, they're cheap, and run from 4 outlet up to a dozen.

Manifold would be a more proper description. It has one inlet and a bunch of outlets.