Thanks ease21, its a 18mg 60/40pg/vg base. I've tried the calculators and most don't let u input that your using a premixed nic base. I ordered 18mg pg/vga so I wouldn't have to dilute it, just add flavor. How do you mix your juice? I've got some capellas banana,coconut,and graham cracker, mocha flavors on the way. Any suggestions? Say for a 30ml bottle, how much nic base,how much flavor? Sorry for all the questions, just confused.