As I read through the various bubble hash threads, I've noticed the same common ideas: 1) Leaves added to Ice water 2) Agitate the leaves to loosen trichromes 3) Engage in a multiple filtering process until all superfluous matter is removed Most of the finest meshes filter at 25 microns. I was wondering however, if 20 microns is too small? If not, perhaps one could use coffee filters for smaller amounts? I had in mind filtering the ice water through a colander with larger holes, next through a colander with smaller holes, and then finally through coffee filters. Would this work?