To deal with the juices that etch or crack tanks you need to get the Aspire ETs bdc glassomizer tank and then the Volt ETbdc to use the bottom for the threading. Had a real problem with gurgling and leaking but solved this by drilling the bottom pin to 1/16th with the handy dandy little Dremel and now they work great. Can't say I like bottom fill tanks for filling because find it hard to know how much juice I have in there but cleaning is much easier and the bottom coils really make a wonderful difference in the taste of the juices. Got my stuff from SI and YES wish Halo would offer a bottom coil glass tank but may not have it as a priority since none of their juices cause a problem.
Also, shortning the wicks on their T2 tanks makes a big difference too. Shortened mine to about half mast and took top wick out and replaced with cotton and like the results I am geting now but must remember to tilt and swirl but I do that anyway so no probs.
Also, shortning the wicks on their T2 tanks makes a big difference too. Shortened mine to about half mast and took top wick out and replaced with cotton and like the results I am geting now but must remember to tilt and swirl but I do that anyway so no probs.