Hiya,
It helps if the Naphtha is super-saturated with DMT before you freeze it.
Did you keep the Naphtha you poured off? If so, either: A) completely evaporate it and scrape up the goo/crystals, B) evaporate it down to 1/4 its original volume and freeze it, or C) do some more pulls with it, then evaporate it down to 1/4 of its volume and then freeze it.
I'd go with option C because the DMT is either in the base soup or the Naphtha.
For a 90g MHRB beginner extraction, you should expect at least a gram. Provided that its good bark and not bunk.
G'Luck,
wap
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