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            <div>Brian,</div><div>I think you will need a layer of foam on top of the absorbent to compact the material and also to prevent air flow from concentrating over the top of the media bed.  Its that pesky "path of least resistance "rule.  I could be wrong, but a CO2 level test in the sub will tell the story. </div><div>Hank</div><div><br></div>
            
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                        On Monday, January 29, 2018, 3:37:35 PM MST, Brian Cox via Personal_Submersibles <personal_submersibles@psubs.org> wrote:
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                    <div><div id="yiv0658809056"><div style="font-family:Arial, sans-serif;font-size:10pt;"><div>Hi Psubbers,</div><div>                          Made a little video of how my scrubber functions:</div><div> </div><div><a rel="nofollow" target="_blank" href="https://www.youtube.com/watch?v=njurobB1y4A&t=436s">https://www.youtube.com/watch?v=njurobB1y4A&t=436s</a></div><div> </div><div> </div><div> </div><div>Brian</div><div> </div></div>
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