Id use cotton but I like being able to burn off old
juice to change flavors
then i would work on just perfecting a regular silica build. with a little tuning of the coil and airhole you can get great vapor production.
unless your really just trying to make a cloud factory to impress others.
this is just a single strand of 3mm silica at 1.1 ohm on a lil bitty phoenix, really, how much thicker does it need to be.
in an igo run some doubled 3mm with a .8 ohm coil and you'll make plenty of vapor