Hi all, I only just started vaping, end of first week actually. My Protank3 mini I am using came with a 1.5 Ohm coil that I was setting my voltage to between 3.3 and 3.8V, normally midway. I just swapped out the coil for one of the spares I bought so I could switch flavour without waiting for the wicks to dry. The new ones are 2 Ohm. Now, I understand all the Ohm's law jazz, but I am finding this coil harder to work with. I check a chart for advised voltages and at 2 oHm it advised that the optimum voltage for that resistance would be 3.0 - 3.4V?! This really gives me nothing, so I have turned up the voltage to 3.8-4.1 and it seems a bit better, although I do feel like I am having to take longer puffs than with the 1.5 Ohm coil, and I am hesitant to put the voltage any higher. Basically, my questions are : How high can I go with this resistance, and what are the downsides of operating at a higher voltage? Is there really a definitive optimum voltage range that a particular resistance coil should be set at? Cheers !