so do anyone know where to get replacement spray bars, mines is cracked or cracking.
See if you get a spray bar for a Marineland C. The intake works as a replacement for me so I figure ...
Except for the impeller for the SunSun I have not found any other replacement parts.
I have the same problem as you. I figure that if the small crack I have gets any worse I'll either do a DIY spray bar or order a spray bar from some other Manufacturer. If you have the 302 the tube is 7/8" ID( I believe). You can work from there to figure out what you need or want to do.
Hope this helps.