I try to reduce all my boils from 100 grams down to about 1 to 2 liters, then freeze/thaw/filter them a few good times, then i separate the clean portion of liquid from any liquid at the bottom with remaining crud, then i'll dilute the little bit of liquid with crud, stir, re-freeze/thaw/filter a few more times until i make sure i get all possible DMT away from the crud, and then i'll combine all the clean portions and reduce down to final concentration although since i usually like to sip on my Mimosa or Acacia tea i'll usually leave it a bit diluted at about a liter for 100 grams, whereas if i wanted it more concentrated i would usually do it at about 500mls for 100 grams.