Hey guys! I just picked up a itazte VTR and it came with an iClear 30S tank that I am absolutely loving so far! I just have a question though because my track record with tank maintenance and cleaning thus far has been spotty at best. Are there any REALLY good guides on how to clean an iClear 30S tank? Also, how often should I be cleaning it and when should I think about replacing coils? I've been through about 3 full tanks of juice thus far on it and still getting great taste, a great throat hit and a nice amount of clouds running at 3.8V.