the tank types never have polyfill. there are dual element tank setups
dual coil tank Polyfill systems work with this too, but once you are finished there is sure to be a good bit of dmt stuck in the polyfill and not easily recoverable. and they dont work till you put enough solution in to saturate the polyfill and then some.
the Joye system has a seperate atomizer and tank, many other have the two combined and they call that a cartomizer, just like the cartridges you allude to.
the cheapest way to get a tank setup that works with your current 510 batter is just to buy the ce3
Vape Store Online | e-cigarettes, e-liquids, vape kits & pens | myvaporstore.com disposible tank. It has the tank and the atomizer in one disposible piece. A box of 5 is $10
It actually does make a bigger plume than the joye that I posted, and in retrospect might be a better suggestion for a first purchase, as it is cheaper and makes a bit more vapor.
And yes, dual element setups make more vapor. You can put the PEG-400 mix right on the polyfill of a dual cartomizer, but you will have some residual spice left in the polyfill once you are through. There are lots of ways to make this work.
Another point is that you don't really want the tanks or cartridges with large volumes because the battery runs out way before you use up a small tank, so whats the point, you have to regroup anyway. A big tank can work with small volumes, but a big polyfill cartridge needs lots of liquid to work.