I've been in the extraction game for a while and was looking to start upgrading and maybe start building a closed loop system. I've researched for quite a bit on different setups and methods and whatnot and never could understand why people are using electrical pumps at all in the process of moving butane in a system. Now I'm for sure not a chemist, but why are people paying like $2k for a explosion proof pump? I feel like thats overkill if you're only running like a pound at a time. I've... Active Closed Loop system - pneumatic pump? from Concentrates and Extracts Read more about cannabis concenrates
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