According to grizwalds guide to mixing u have to thin out the VG by using around 20% of deionised water or alcohol. Is this essential?
Nope with that ratio the PG will thin out the VG.
I don't use PG (apart from what's in the flavours) so I have to put in about 15% water otherwise my kayfuns can't pull the liquid into the chamber.
no ..pg carries flavour very effectively as well(which presumably is why cheaper liquids tend to be pg heavy), so no need.So in a 60/40 pg/vg mix I wouldn't need it then? I like the sound of the water carrying more flavour though