John Quest fitting question

[WhatCouldGoWrong71]

I thought the blue locking clips should be left in place, am I wrong? I discovered one of my bulkheads would only work if the blue clip was removed on the hard tube side (in the bottle).

Also, how often do you change your dosing lines? Nopox turns mine white.

 

[Lps_lover12]

In my experience the blue clip is just an extra safety feature so the line can’t come out. I don’t use them often, for my dos I don’t use them