The first 100 people to use code SCIENCE at the link below will get 60% off of Incogni: https://incogni.com/science
This spiral pump uses air lock to push water to great hights.
Here's Johnathan Deane's paper on the subject: https://openresearch.surrey.ac.uk/esploro/outputs/journalArticle/A-hydrostatic-model-of-the-Wirtz/99515507702346
Alex Hackman
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