If I had not found this site would not have learned as much as I have. I had gotten my Echo in yesterday and filled the cart with 50/50 18mg juice. My mouth was so-o-o dry. After browsing the site I learned that it was probably too much pg for me, and probably too much nicotine as I had been vaping 12 mg. So off to the store to find vg and to the liquor store to get vodka to thin the vg and mixed some up. Then I took some of the juice I was using and mixed a little of the vg mix into it and topped off the cart. It is much, much better already. If it wasn't for this forum I wouldn't have had a clue what to do. Thank you all so much.
