Funny thing; I've just made a similar observation only this persons NP got a cloudy sediment floting in the middle when placed in the freezer.
Other conditions are as follows;
Naphtha pull was done 'Dry-Tek' style.
Mimosa H bark was used for starters but, M H Bark was also USED (two Xylene pulls had been done on it previously), the bark was particularly excellent and produced extra beautiful and neat-o(!) visions

so, a person waited sixty days without letting the mud dry completely (wrapped the bucket in a plastic bag while the bark was still muddy with residual solvent and water\vinegar).
Warm room-temperature VM&P was then used to pull. This Naphtha was old and had been used a few times before to pull. Plus it too had been kept in a dark, warm and humid place, undisturbed, for about sixty days.
Qt21Qt21 points out that in is not the length of the 'Solve' but, rather, it is the 'Cuagula' which determines how effective the pull is when he says;
"SWIM likes to think of using the non-polar solvent like using water to dissolve some salt. Though the salt will not instantaneously become saturated with salt, it will in a few minutes. Same with the solvent, it is the bark and lime that works for hours, not the solvent."
Lastly, the pan that was used to percipitate was an old, glazed ceramic that had a previous history in some sort of lysergine affair.
When a cloudy, brownish, sediment was observed floting in the middle of the solvent that was diffrent from the small, ruff crystal coating on the sides of the pan, the pan was removed from the freezer. The intention was to warm it back up and then filter the solvent a second time plus clean the pan better.
But the cloud dissolved alot! At a diffrent rate than the crystals too!

Is it oils?! Is it a mold or fungus?! seems absurd but fungus can live in some pretty ruff conditions...
Uhh, thats my two cents. Now I'm considering a fermented DMT Citrate beverage.
In this world there are adults and there are children. In fact the world is filled with children; they are angry and hurt, frightened and abused, lazy and ignorant, stubborn and hateful. The world hates an adult and they would rather cause their peers to fail at any venture of self improvement before having to step up and improve their selves so as to maintain pecking order and evidence of the lowley opinion they have of each other. The best of them enslave the others so that they all consume and destroy all there lives in order to satisfy their immense greed claiming that they are providing a future for their legacy and never question the possibility of doing better in order to leave a real future for the children they will leave behind on this, our Earth. They pretend that it is impossible and when cornered they admit their apathy saying that they won't be around to suffer the out come. They hate the adults for exposing their immense weekness. The total failure that they call success. Mean while the adults strive to minimize their own impact and perpetually work to undo the damage already done. The adults who already know; they are the children of tomorrow.