Welcome
@Lakelad23, I hope you find this forum as informative and useful as I have over the past few weeks. I have 2 Tarot Nanos and a total of 4 [standard] tanks (I forget what Vaporesso calls them). As
@AzPlumber notes, and I'm sure you're aware, the Nano can tip-over relatively easily, even with the "standard"/included tank. However, unless the device is near the edge of a table above a "very hard" floor, this shouldn't be an issue, espeically if you have 1 or more "vape-rings"(?) around your installed tank. Otherwise, as
@stols001 mentions, you can install ANY tank you wish, I've often thought about getting an NRG tank ("for" the Revenger) even though it's 2mm larger in diameter, aesthetics be damned. So, as also mentioned above, the options are nearly limitless but it would be prudent to bear in mind available coils and their recommended wattage. In other words, if coils for whatever tank are recommended for a wattage the Nano can handle, fine. If you need more watts than the Nano can produce, move on.