Oh! and I never realized just how thick pure VG really is, thinking I might have to invest in some PG or pick up some everclear to thin the stuff out. Found out that I don't even really need nicotine anymore to enjoy vaping and would love to start down that road but it's just way too thick for cartos like that. Even at the 70/30 VG/PG (PG from the nicotine and flavors) ratio I'm using it's struggling to wick at times.
You can use distilled water. I haven't, but there are threads on it. Not to mention PG is WAY cheaper than everclear.