One of the best things about making your own spray bar, you can have the holes facing at different angles. Some facing the surface for gas exchange, some blowing straight out and some facing downward. You can get flow to multiple areas with a single bar.
Or you can even have multiple spray bars off the same return, at different levels in the tank.
Yes, you can basically use your return pump to eliminate the need for powerheads with a few strategically placed return lines.
Your return plumbing is only limited by your imagination.
