aquamist nozzle quick connect.
 

Does aquamist make a quick connector that will connect the nozzle barb to a 4mm tubing? Or do you basically have to squeeze the tubing on that barb?

Push the tubing on, and if needed cut it off, do not pull it off. If you're involved with swaping jets I would get a quick connect, install that in the line not far from the jet, and then keep a little piece of tubing on the jets your swapping around and use the quick connect end to remove and install the jets easily and quickly.

Yeah, that's what I do as well when swapping nozzles.
Keep half an inch of hose protruding from the barb and use quick-connects. :smile:

I use that exact method for my nozzle - an L quick release. Unfortunately, I did not push the 4mm hose in deep enough once and ended up running out of water on the commute home. Luckily I just started using blue WW fluid so I knew what happened.

I see that theres a new connector....806-359 this is a straight 4mm - 4mm. This might help to simplify some jet installs when you want to keep the lines straight and not use an elbow quick connect.