yeah i was reading here:
but i dont get it 
when in pulled the jar out the box with dry ice there was a lot of stuff at bottom (white/ yellow) . and some on the side walls. and a lot was filtered in the coffee filter. i filtered in the box with dry ice.
so can dry ice make the solution too cold that thca crashes out and geta trapped at the bottom of jar or in coffee filter?
thanks for answering ( or a link where i can read 
)
greets from germany