Ran into the Medusa at a new job, quickly was able to come up with a solid work around!

lol the supplier we swapped to that doesn’t have the fast crash gas uses old cylinders and I don’t even know if they have a “3 phase patented cleaning process”. I’ve never even seen a coffee cup at the welding supply. Years old gas innovation stickers on them, I’m sure they’re very old cylinders by now.

I’m not sure why this company has clean gas and High Precision was spicy, but those are the facts. It’s goddamn welding supply store. And they have cleaner gas than any of the IG clowns. Maybe it’s just this shipment that is clean. Who fucking knows. I do know this is absolute trash material that coincided with especially bad fast-crash sugar, but changing our solvent supplier fixed… everything.

It’s the gas. Ya’ll can definitely assume our tech isn’t that good or fancy. From 20 minute crash, to knuckle sized diamonds, with the only REAL change being our solvent supplier.

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San Diego


Been playing around a lot during recovery and am almost back to feeling confident. Obviously want to continue my attempts before sharing anything lmao.

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It was theorized that it was peroxide oxidation that may cause fast crash. Thinking back to high school chemistry, could sodium hydrogen sulfite dilute solution with sodium phosphate buffer, sodium thiosulfate, or oxalic acid be used to remediate the peroxide in gas before use?

(Please feel free to tell me I’m way off base here. I’m just a measly grower)

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I personally haven’t found any connection witb h2o2 and the issue. My homies been using h2o2 for ever in their grow.

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We’re getting there

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Good to see.

Still good in our lab, but I’m personally expecting it to recur. I don’t credit my suppliers diligence, I credit their luck.

It’s crazy how different the jars are right after harvest.

Fast crash jars are almost effervescent. Boiling aggressively, reactive. The normal jars are soon to stop bubbling as the solvent chills itself.

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How much material was run for this jar?



We’re finally back in business consistently getting facets.

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Who else needs this issue fixed?

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Can confirm @Ahay5280 can solve this issue, as best as anyone can.

Hard worker and gets the job done without any questions.


These were made using his suggestions, along with scrubbing the gas using 10a and AA.
Got this facility back to 5,000g large THCa rocks per month using jars only, no pentane.

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Gotta get you the full run down whenever the next job is! Definitely can get those even better :pray::muscle: massive improvement though!

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I’m still having this issue. What did you change?

Literally just crash warm and vent head pressure early and gently.

Contaminate gone, crash proceeds as normal.

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Have you been reading the other threads? Seems like there are two schools:

  1. Clean your solvent (water wash, media filtration, experimental resins)
  2. Change your process. (Warm crash, positive pressure)

All of the methods have been explained, debated and shared in these threads. If you’ve got more money than time, raise your hand slowly. There are a LOT of experts around here. Do you homework. Ask for references.

Starting with a solid understanding of baseline will expedite any project. Take time to update your SOPs, validate documentation (are we doing it the way we say we’re doing it) and have your house in order. A good consultant can assist you by redlining your SOP parameters.

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I’ll message ya!

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Have you tried following with another solvent?

Ive tried the 10x sieve / AA scrub. It seemed to work for a bit then I recently ran into the problem again. Maybe I wasnt properly cleaning my sieves after i used them? Idk id get an over to 400 and pull a vac on them for a day or so.

also when i do live resin in pyrex i get absolutely zero medusa.

any other suggestions or work arounds would be greatly appreciated, if you could message me too @Ahay5280

Don’t try to regenerate the mol sieve too much. If and when you do.

Put them in the oven, start pulling vacuum and keep it on, set oven temp to 450f and walk away for the night, next morning drop oven to room temperature, and keep vacuum going, wait until oven is room temp (this may take an entire work day or longer, depending on your ovens. If you’re using a cascade, that ish will take a week to drop temperature. Kidding, not kidding), shut valves and turn off pump. Then you can open the oven and reuse them. Make sure that the oven is clean as a whistle. No oil or stains, anything in the oven that will hinder the efficacy of the mol sieve.

Or just replace them with new beads and Activated Alumina each time

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