Brian,
If you need any barb fitting in the half inch to one inch range let me know,I just cleared out my Redding warehose and found a large box of barb to barb,thread to barb,etc.I have 90s/Ys/Tees,inline reducers etc.Also have half inch to 1" bulk head fittings,if you dont need them for this DIY project I can donate to the next DIY project.Also have assorted plastic zip clamps that can be used internally.These are the black clamps not zip(wire)ties.
Dave