To give a little back information I have been a smoker for 16 years and was up to a pack to a pack and a half a day. A month ago my partner and i took the plunge and started vaping. We got kits from Volcano and at first it seemed great then my batteries went. The tank was ok but the cartos got clogged with most things I tried using. I even went and got some cartos with three holes and while that helped prolong my vaping time it just wasn't cutting it. Finally i broke down and got an Ego C Upgrade battery and an IClear 30 tank. The first three days it was PERFECT. I love the coffee flavors which really are thicker juices and I'm thinking this might be the main issue? After about four days of vaping, and I probably vape about 4 mils a day or less, it seemed i burnt the atty. The juice in my tank got extremely dark compared to what it started as and it had the gross burnt taste. So I've changed the atty but my main issue is, is this normal? 4 days of vaping and I have to change an atty? I had heard they would last 2-4 weeks and I didn't expect the full month since I do vape the same liquid pretty constant all day. Any suggestions of what might have gone wrong or things I may not know to do to keep the life going? Also is it the coffee liquid causing havoc? I love the battery and the tank holds plenty for me to get through my work shift and typically i have to refill about once a day basically I let it get to half a tank and refill and go from there. I have always heard to top off as often as possible. I've really enjoyed vaping over analog and am proud to have made it over a month now without a real smoke. But it is extremely frustrating to see it not working the way I expected. Any help would be greatly appreciated!