My first ever kit is an IPV mini, and an aerotank v2.
The display says 2.0 ohm, how much power is okay?
The chart says I should run 8 watts, when I try this I get the correct voltage reading as the chart, but I'm just getting air, no smoke or taste, if I run at 15 watts, I get good taste but the chart says this will burn the coil, what am I doing wrong?
Eskie pretty much hit the nail on the head. All I can do is elaborate.
I still rarely use a protank 2, which uses a very similar coil as your aerotank, but yours is updated.
First, let me explain how the wick works.. it's pretty much a wire wrapped around a silica wick. The good part is, it's next to impossible to burn silica (I have taken a blow torch to silica to clean it in the past). So, you won't have to worry about burning the actual wick. That doesn't mean they go bad, or you can't get a bad taste from them though. If you run too hot, and get a bad taste on it, it will stay in the wick. So, still try and keep those wicks wet.
Now for the actual coil wrapped around the silica.... The Protank/aerotank coils are quite small, and there's not much room for coils in those things. So, to vary the resistance, they use a high gauge wire (thin wire). A 2.0 ohm coil is more likely 32 or 34 gauge kanthal if I were to take a guess.. that is a very thin wire. The more watts you use, the hotter the coil gets. Think of it like one of those older light bulbs... They have a small coil in there that makes light. If you put it on a dimmer, you can vary how much power that coil is getting. The Kanger works the same way. If you run too much power, it will simply blow out.. like a light bulb.
Now for juice. There is PG (Propylene Glycol), and VG (Vegetable Glycerine) which is used to make the vapor. Flavor and nicotine is usually added, but %80 or more of it will be PG, VG, or most likely both. The Kanger aerotank has a small inlet for the juice to go in. PG gives more of a throat hit and is a bit better of a flavor carrier, but it doesn't produce as much vapor as VG. PG has the consistency of water, which is thin. VG produces a smoother vape and more dense clouds. However it doesn't carry the flavor as much as PG (It still carries quite well IMO). VG has the consistency of vegetable oil. Your Kanger tank will probably wick a higher PG liquid better than a more VG based liquid. I would look for 50/50 mixes of PG/VG and see how those vape.
Now to put it all together, as you inhale, the air is passed around the coil, which cools the coil as well. If you inhale hard and take short 2 second bursts, you could probably get away with a higher wattage setting. If you tend to take long drags, you put more stress on the coils, since they tend to get hotter. If I were you, I'd try to inhale for a half a second after you let off the power, just to cool the coils down some. This may help your coils cool down quicker.
In the end, it's all up to your own vaping style. As long as you're not smoking, you're doing a much healthier alternative to cigarettes. I'd rather go through Kanger coils rather than run for a pack of cigarettes. Vape how you like, get a secondary setup for backup just in case yours breaks, and have fun with it. And as always, if you have ANY questions, feel free to ask.
