<div dir="ltr"><div>Cliff, thanks. Thats the same as I purchased. Where did you source your radial fan? Wyvonne laughed when I told her I would be sitting in the sub for 12 hrs like Cliff. Here first response was can't you find someone to trade places 1/2 way through? LOL I will look into that other scrubber material.<br></div><div><br></div><div><br></div><div><div><div dir="ltr" class="gmail_signature" data-smartmail="gmail_signature"><div dir="ltr"><div>Best Regards,<br>David Colombo<br><img src="http://static.squarespace.com/static/533310a9e4b0fba62008a464/t/5339c1f2e4b041bac4e25d1b/1396294132055/?format=500w" width="200" height="110"><br>804 College Ave<br>Santa Rosa, CA. 95404<br>(707) 536-1424<br><a href="http://www.SeaQuestor.com" target="_blank">www.SeaQuestor.com</a><br><br></div></div></div></div><br></div></div><br><div class="gmail_quote"><div dir="ltr" class="gmail_attr">On Mon, Dec 14, 2020 at 8:08 AM Cliff Redus via Personal_Submersibles <<a href="mailto:personal_submersibles@psubs.org">personal_submersibles@psubs.org</a>> wrote:<br></div><blockquote class="gmail_quote" style="margin:0px 0px 0px 0.8ex;border-left:1px solid rgb(204,204,204);padding-left:1ex"><div><div style="font-family:times new roman,new york,times,serif;font-size:16px"><div></div>
<div dir="ltr">David, the scrubber on the R300 holds 3.5 lbs of SodaSorb HP. The longest I have been submerged was 12.5 hours during a pool test. The longest I have been submerged for a normal dive event is 5 hours at one of the Islamorada PSub conventions. My NOP is to discard partially consumed absorbent at the start of each dive day regardless of how many hours used and refill. I keep spare absorbent in sealed bags onboard sufficient to last 80 hours (8 hours normal dive time plus 72 hours emergency time). Due to W.R. Grace, the manufacture of SodaSorb HP, stopping manufacturing of this CO2 absorbent, I have switched to DiveSorb Pro from Dragger. I have no experience with the new absorbent but plan on doing some shop testing prior to my next dive. If you are interested, I have a report on my life support system where I have documented the system as well as all testing. If you are interest, I would be glad to send it to you if you will contact me off list. The scrubber design I used is based on the scrubber in Snoopy. It is a radial flow charcoal filter container with a blower that discharges the clean air from the top. After I got the right blower speced for the unit, the scrubber has worked great.</div><div dir="ltr"><br></div><div dir="ltr">The filter container is 6" OD x 7-1/2" height, with 4" ID for annulus that contain the absorbent. The one I use is like <span><a href="https://www.ebay.com/itm/iPower-4-6-8-10-12-Inch-Air-Carbon-Filter-Virgin-Charcoal-for-Inline-Fan/151039619541?_trkparms=aid%3D1110006%26algo%3DHOMESPLICE.SIM%26ao%3D1%26asc%3D20200520130048%26meid%3D94db0d56ef7f488684c04841973fb840%26pid%3D100005%26rk%3D1%26rkt%3D12%26mehot%3Dpf%26sd%3D381842163004%26itm%3D151039619541%26pmt%3D1%26noa%3D0%26pg%3D2047675%26algv%3DSimplAMLv5PairwiseWebWithDarwoV3BBEV2b%26brand%3DiPower&_trksid=p2047675.c100005.m1851" rel="nofollow" target="_blank">iPower 4" 6" 8" 10" 12" Inch Air Carbon Filter Virgin Charcoal for Inline Fan | eBay</a></span><div><br></div><div id="gmail-m_113979240406718268ydpfa6e2041enhancr_card_8838225241" style="max-width:400px;font-family:YahooSans,Helvetica Neue,Segoe UI,Helvetica,Arial,sans-serif"><a href="https://www.ebay.com/itm/iPower-4-6-8-10-12-Inch-Air-Carbon-Filter-Virgin-Charcoal-for-Inline-Fan/151039619541?_trkparms=aid%3D1110006%26algo%3DHOMESPLICE.SIM%26ao%3D1%26asc%3D20200520130048%26meid%3D94db0d56ef7f488684c04841973fb840%26pid%3D100005%26rk%3D1%26rkt%3D12%26mehot%3Dpf%26sd%3D381842163004%26itm%3D151039619541%26pmt%3D1%26noa%3D0%26pg%3D2047675%26algv%3DSimplAMLv5PairwiseWebWithDarwoV3BBEV2b%26brand%3DiPower&_trksid=p2047675.c100005.m1851" style="text-decoration:none;color:rgb(0,0,0)" rel="nofollow" target="_blank"><table style="max-width:400px" cellspacing="0" cellpadding="0" border="0"><tbody><tr><td width="400"><table style="max-width:400px;border-width:1px;border-style:solid;border-color:rgb(224,228,233);border-radius:2px" width="100%" cellspacing="0" cellpadding="0" border="0"><tbody><tr><td style="background-color:rgb(0,0,0);background-size:cover;border-radius:2px 2px 0px 0px;min-height:175px" valign="top" height="175" bgcolor="#000000"><table style="width:100%" cellspacing="0" cellpadding="0" border="0"><tbody><tr><td style="background-color:transparent;border-radius:2px 2px 0px 0px;min-height:175px" valign="top" bgcolor="transparent"><table style="width:100%;min-height:175px" height="175" border="0"><tbody><tr><td style="text-align:left;padding:15px 0px 0px 15px;vertical-align:top"><span style="color:rgb(255,255,255);font-size:16px;font-weight:600">$32.99</span></td><td style="text-align:right;padding:15px 15px 0px 0px;vertical-align:top"><div></div></td></tr></tbody></table></td></tr></tbody></table></td></tr><tr><td><table style="background:rgb(255,255,255) none repeat scroll 0% 0%;width:100%;max-width:400px;border-radius:0px 0px 2px 2px;border-top:1px solid rgb(224,228,233)" cellspacing="0" cellpadding="0" border="0" align="center"><tbody><tr><td style="background-color:rgb(255,255,255);padding:16px 0px 16px 12px;vertical-align:top;border-radius:0px 0px 0px 2px"><img src="https://s.yimg.com/nq/storm/assets/enhancrV2/23/logos/ebay.png" style="min-width: 36px; margin-top: 3px;" height="36"></td><td style="vertical-align:middle;padding:12px 24px 16px 12px;width:99%;font-family:YahooSans,Helvetica Neue,Segoe UI,Helvetica,Arial,sans-serif;border-radius:0px 0px 2px"><h2 style="font-size:14px;line-height:19px;margin:0px 0px 6px;font-family:YahooSans,Helvetica Neue,Segoe UI,Helvetica,Arial,sans-serif;color:rgb(38,40,42);max-width:314px">iPower 4" 6" 8" 10" 12" Inch Air Carbon Filter Virgin Charcoal for Inlin...</h2><p style="font-size:12px;line-height:16px;margin:0px;color:rgb(151,155,167)">Professional grade filter that will handle the nastiest odors produced by the prettiest plants. 【Durability】 iPo...</p></td></tr></tbody></table></td></tr></tbody></table></td></tr></tbody></table></a></div><div><br></div><div><br></div><img title="Inline image" alt="Inline image" src="cid:17663d573099f4d211a1" style="max-width: 800px; width: 100%;"></div><div dir="ltr">I am a big believer in shop life support tests so that you know the actual performance limits of your life support system. I would encourage all phubbers to do this qualification work prior to normal dive operations. It is actually a lot of fun to conduct these test. I find there has been no problem in getting volunteers for these life support test which need to be done in a controlled environment for safety purposes.<br></div><div><br></div>
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On Sunday, December 13, 2020, 09:14:10 PM CST, David Colombo via Personal_Submersibles <<a href="mailto:personal_submersibles@psubs.org" target="_blank">personal_submersibles@psubs.org</a>> wrote:
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<div><div id="gmail-m_113979240406718268ydp47af57b8yiv0424921739"><div>Hi Guys, I was following Jon's thread and thought how appropriate. I am building a scrubber for the VAST sub. The housing I acquired was a carbon filter used in the grow industry. With an interior screen core for the air to flow thru to the sodasorb core to the outside screen. The volume of this space holds 3.6 lbs of carbon. Not sure if the weight per volume of the sodasorb is exactly the same, but if it is that chamber would produce about 14.4 hours of absorption. I'm am thinking that I am going to cut the unit in half. My thinking is that for a typical day of diving, 14 hrs seem a bit excessive and I would be wasting a lot of sorb. With pre packaged, vacuumed bags I can carry what would be required to meet ABS guidelines. One of my concerns though is that with the compactness of the VAST sub with a reduced volume of sorb, would the heat generated be greater than with more sorb, thereby also increasing the humidity buildup.<div>I am hoping to get some experience feedback from other small owners, and what they have used volume wise of the sorb for a typical day of diving. The co2 unit I am using measures humidity as well as co2 ppm. </div><div>Attached are pictures of the unit ready to have the fan attached.</div><div>Best Regards,</div><div>David Colombo<br><div><br></div></div></div></div>_______________________________________________<br>Personal_Submersibles mailing list<br><a href="mailto:Personal_Submersibles@psubs.org" rel="nofollow" target="_blank">Personal_Submersibles@psubs.org</a><br><a href="http://www.psubs.org/mailman/listinfo.cgi/personal_submersibles" rel="nofollow" target="_blank">http://www.psubs.org/mailman/listinfo.cgi/personal_submersibles</a><br></div>
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