Hi,I just purchased halo g6 starter pack with 5 mini tanks and an assortment of e liquid tobacco flavours. Ive just read since that their mini tanks are prone to leaks and have since found out that joyetech MT3 are leak proof? Should I find that the Halo's do indeed leak I was wondering if I could use the Joyetech MT3 on the Halo battery ? I was also wondering how long the non refill cartomisers and the refill mini tanks were safe to use before they became a health hazard i.e bacteria .I say this because I estimate that I would be using them for at least 4 days . Any advice would be very welcome and appreciated. Thanks Mike