Because my pump is rated at 1500gph and I want to spread flow over a wider area ,(as opposed to a narrowly focused stream),
I build manifolds out of PVC from the hardware store to spread flow out.
Yes the majority of canisters have the option to purchase a spray bar. If not get some PVC, a cap, and drill some holes to your desired flow. I made and installed this one in 15-20 minutes. I see an extra Eheim heater mount to keep it in place.