I've had some good times with DMT in an e-cigg. The experiences have been slow, mellow, and social. First timers have a much easier time handling the device and are able to get a nice, mellow introduction to DMT.
If you're looking for big breakthroughs, I recommend a GVG. In my opinion, E-ciggs are good for light experiences, a slight elevation.
Some tips:
1) 1g/1mL provides about 100 hits
2) PEG 400 (polyethylene glycol 400) works well but is harsh
3) PG (propylene glycol) works well
4) VG (vegetable glycerin) can be added to mellow the PG (stay below 1g/1mL)
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DMT Nexus Research ----
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