Hey guys, I've been using a mini e-cig kit for around a month now and just refilling the "disposable" cartridges with liquid, but reading through this forum etc I've seen alot of people talk about replacing wicks and atomizers etc. If I was to buy e.g. this kit : Smoker's Halo Ultra Tank - The Smokers Angel how long is it likely to last on average vaping 20 cigs worth a day( just a ball park figure), or is it an indefinite amount of time, will I need to replace individual components? Thanks