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I suggest two items:
1.
@Ratchett on this site runs Delta 3D Studios. He makes a silicone adapter (Song)which works for connecting a hydratube and just happens to work well for attaching a whip firmly to Herbie, which can then connect to a bubbler With it a whip is much more secure.
So here's one glass setup, from ratchett Song directly to hydratube:
If you like a bubbler better, I like the Song + the MFLB water hip (Magic Flight Launch Box).
It consists of the whip + a 14 mm male glass end that fits into a bubbler (and the glass also serves as a handy mouthpiece if you want a direct whip hit) + a nice wooden piece that serves as a hand hold.
Picture shows MFLB water whip connected to my miniVAP but you can see how it connects:
MFLB piece is approx $30 I think??
So, it depends on if you want hydratube style glass or bubbler style glass...