Hey guys, very new person to vape over here.
So I bought a iStick 30W (don't know tank name, picture provided) and I had 3 coils provided for me. The first one I used I think I burnt so I replaced it with another. After my first 30 Ml of juice, I bought new ones (I don't smoke anything with nicotine so I got 0 MG). But the thing is, my first juice, I was able to smoke up to 30W for atleast 5 seconds. Now with this new one, I can't even go over 15W without giving up after 3 seconds. It tastes harsh and hurts my throat. Could it be because it's 50/50? The liquid I just bought today looks very runny (unlike the other, which was like syrup). Should I buy 70/30 instead so I get more PG?