I use a 2pc grinder -the Newvape Fine Grinder, emptied into a rounded edge wooden bowl with a Delta 3D spoon to get it into the stem.
I connected the ice stem to a water pipe adapter via tubing and held the stem on the Nano. I can get mega rips like this. Then I ordered some glass balls to make an Ice water adapter by pushing a screen down into the adapter by the 14mm side, filling the middle part with the glass balls, and then putting my top screen in like normal. This seems to really add to the cooling of the vapor. To test it I combusted a bowl, intentionally, at 8, and holy pugmother was it cool. Quite literally.
Another thing is I am somewhat able to use the E-Nano in a session now, if I take shallower puffs and don't grind. Just got around 6 small tasty puffs off a chunk of super lemon haze stuffed into the stem.