The Provari v1 has a 2.5 amp limit (the Provari v2 has a 3.5 amp limit). I'm not familiar with the Protank, but the Provari doesn't support TC and the SS and Clapton coils are most likely too low in resistance for the Provari to fire without displaying an error. The iStick Pico is a nice mod and should work just fine with any atomizer in wattage mode.