<DIV style="font-family:Arial, sans-serif; font-size:10pt;"><FONT size="2">David, And that material is corrosive. </FONT><DIV><FONT size="2"><BR></FONT></DIV><DIV><FONT size="2">Brian</FONT></DIV><DIV><FONT size="2"><BR></FONT></DIV><DIV><FONT size="2"><BR></FONT><BR><SPAN style="font-size: 10pt;">--- personal_submersibles@psubs.org wrote:</SPAN><BR><BR><SPAN style="font-size: 10pt;">From: David Colombo via Personal_Submersibles <personal_submersibles@psubs.org></SPAN><BR><SPAN style="font-size: 10pt;">To: Personal Submersibles General Discussion <personal_submersibles@psubs.org></SPAN><BR><SPAN style="font-size: 10pt;">Subject: Re: [PSUBS-MAILIST] Scrubber size</SPAN><BR><SPAN style="font-size: 10pt;">Date: Mon, 14 Dec 2020 16:36:29 -0800</SPAN><BR><BR><DIV dir="ltr" style="font-size: 10pt;"><DIV>Steve thanks for the advice. It could get messy in a change out. I could practice while sitting in the sub for the 12 hr test. (my wife says to me what are you going to do for 12 hours?) <BR></DIV><DIV>I just shrugged my shoulders?</DIV><DIV><BR></DIV><DIV><DIV><DIV dir="ltr"><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">www.SeaQuestor.com</A><BR><BR></DIV></DIV></DIV></DIV><BR></DIV></DIV><BR><DIV style="font-size: 10pt;"><DIV dir="ltr">On Mon, Dec 14, 2020 at 6:41 AM Steve McQueen via Personal_Submersibles <<A href="mailto:personal_submersibles@psubs.org">personal_submersibles@psubs.org</A>> wrote:<BR></DIV><BLOCKQUOTE style="margin:0px 0px 0px 0.8ex;border-left:1px solid rgb(204,204,204);padding-left:1ex"><DIV dir="ltr">Dave, From a design standpoint I went with the wasteful media approach. I don't see myself diving often enough to worry about the waste. I made my scrubber volume as large as the installation footprint allowed. I didn't want to worry about changing the media anymore than needed. It still ended up being a trade off as I think I have to change my media out once or twice to have 72 hour capacity.<DIV><BR></DIV><DIV>However you do it imagine changing the media while sitting in the sub.<BR></DIV><DIV><DIV><DIV><BR></DIV><DIV>Steve</DIV><DIV><DIV><BR></DIV><DIV><BR></DIV></DIV></DIV></DIV></DIV><BR><DIV><DIV dir="ltr">On Sun, Dec 13, 2020 at 10:14 PM David Colombo via Personal_Submersibles <<A href="mailto:personal_submersibles@psubs.org">personal_submersibles@psubs.org</A>> wrote:<BR></DIV><BLOCKQUOTE style="margin:0px 0px 0px 0.8ex;border-left:1px solid rgb(204,204,204);padding-left:1ex"><DIV dir="auto">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 dir="auto">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 dir="auto">Attached are pictures of the unit ready to have the fan attached.</DIV><DIV dir="auto">Best Regards,</DIV><DIV dir="auto">David Colombo<BR><DIV dir="auto"><BR></DIV></DIV></DIV>
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