Also another tip when filling the bottle. when screwing the cap back on ,if you have a coil master kit use one of the coiling rods and stick it down the tube like a bung then screw the cap back on. It stops all the juice coming back out. It really does work.
Here's my version
These are all good tips for generally filling squonk bottles. I don't find the basium bottle to be any different from any other squonk bottle.. I use the pinch technique for all bottles regardless...