3 weeks later the fittings arrived.
The in/out fittings are 1/2" John Guest Swivel Elbows as per photo,
The hose that I was planning on using I found at Norwesco (blue stuff.) Alternatively, one could use the typical more rigid 1/2" hose used on these fittings but I believe this hose will work better. It will give a bit more flex but not too much like the clear pvc and vinyl hose.
