QUOTE(firestonez @ Oct 2 2015, 10:09 AM)
C-Fu do use any sweetener in your diy liquid?
I try add 0.5-1% Sucralose to my diy liquid. Half tank already gunk my coil.

that's common and normal. most sucralose solution are 10% sucralose crystals and 90% PG. suc is 700x sweeter than sugar (taste a drop in your mouth just for kicks lel).
local ejuice use around 2-5%. imagine lel
whenever I DIY, I try to perfect a particular ejuice without suc. if it's "good enough" then I try to add some just to see if it's any difference (at most I use 2%, and that's only once lel).
suc, EM, cotton candy, dragonfruit, etc are flavour enhancers. certain flavourings need suc to shine, like a common example would be mango. i'm still trying to perfect my mango without or very less suc.