<html><head></head><body bgcolor="#FFFFFF"><div><br><br>Sent from my iPad</div><div><br>Begin forwarded message:<br><br></div><blockquote type="cite"><div><b>From:</b> "Stephen" <<a href="mailto:sl@210nle.com">sl@210nle.com</a>><br><b>Date:</b> June 7, 2012 10:35:17 AM EDT<br><b>To:</b> Green Building <<a href="mailto:greenbuilding@lists.bioenergylists.org">greenbuilding@lists.bioenergylists.org</a>><br><b>Subject:</b> <b>Re: [Greenbuilding] surface area</b><br><b>Reply-To:</b> "Stephen" <<a href="mailto:sl@210nle.com">sl@210nle.com</a>><br><br></div></blockquote><div></div><blockquote type="cite"><div>Pumice? Some floats, maybe sinks after a while. Lots of surface area.
-------Original Message-------<br>
From: Alan Abrams <alan@abramsdesignbuild.com><br>
To: Green Building <greenbuilding@lists.bioenergylists.org><br>
Subject: Re: [Greenbuilding] surface area<br>
Sent: Jun 07 '12 10:11<br>
<br>
in our region, recycled, crushed concrete is available in several popular grades. not very lightweight, but I
imagine the surface would be microbe friendly.<br><br>this does however, raise the question of PH, due
to the alkaline nature of portland.<br>
<br>
AA<br><br><div class="gmail_quote">On Thu, Jun 7, 2012 at 8:56 AM, Gennaro Brooks-Church - Eco
Brooklyn <span dir="ltr"><<a target="_blank" href="mailto:info@ecobrooklyn.com">info@ecobrooklyn.com</a>></span> wrote:<br>
<blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-
left:1ex">Foam would be a great colonizer but I want to stay away from synthetics given that it is a long
term swimming pool and I don't want to worry about leeching.<div>
<br clear="all">Gennaro Brooks-Church<br>Director, Eco Brooklyn Inc.<br>
Cell: <a target="_blank" href="tel:1%20347%20244%203016" value="+13472443016">1 347 244 3016</a> USA<br><a target="_blank" href="http://www.EcoBrooklyn.com">www.EcoBrooklyn.com</a><br>22 2nd St; Brooklyn, NY 11231<br><br>
<br><br><div class="gmail_quote">On Wed, Jun 6, 2012 at 11:51 PM, John Salmen <span dir="ltr">
<<a target="_blank" href="mailto:terrain@shaw.ca">terrain@shaw.ca</a>></span>
wrote:<br><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc
solid;padding-left:1ex">
<div link="blue" vlink="purple" lang="EN-CA"><div><p class="MsoNormal"><span style="font-
size:11.0pt;font-family:" calibri","sans-serif";color:#1f497d"="">Hi<u></u><u></u></span></p><p class="MsoNormal"><span style="font-size:11.0pt;font-family:" calibri","sans-serif";color:#1f497d"="">Your
talking about a biofilter and foam chips have been used successfully for that in all types of wastewater
treatment for maintaining a ‘smutzdecke’ (waterloo biofilter is one example) though typically it is graded
sand and gravel. Netted bags of foam chips with some kind of ballast might work well. Lots of research out
there.<u></u><u></u></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:" calibri","sans-serif";color:#1f497d"="">
<u></u> <u></u></span></p><p class="MsoNormal"><span style="font-size:11.0pt;font-
family:" calibri","sans-serif";color:#1f497d"="">Best<u></u><u></u></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:" calibri","sans-="" serif";color:#1f497d"="">John<u></u><u></u></span></p><p class="MsoNormal"><span style="font-
size:11.0pt;font-family:" calibri","sans-serif";color:#1f497d"=""><u></u> <u></u></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:" calibri","sans-serif";color:#1f497d"="">
<u></u> <u></u></span></p><p class="MsoNormal"><span style="font-size:11.0pt;font-
family:" calibri","sans-serif";color:#1f497d"=""><u></u> <u></u></span></p>
<div style="border:none;border-top:solid #b5c4df 1.0pt;padding:3.0pt 0cm 0cm 0cm"><p class="MsoNormal"><b><span style="font-size:10.0pt;font-family:" tahoma","sans-serif""="" lang="EN-
US">From:</span></b><span style="font-size:10.0pt;font-family:" tahoma","sans-serif""="" lang="EN-US">
<a target="_blank" href="mailto:greenbuilding-bounces@lists.bioenergylists.org">greenbuilding-bounces@lists.bioenergylists.org</a> [mailto:<a target="_blank" href="mailto:greenbuilding-bounces@lists.bioenergylists.org">greenbuilding-
bounces@lists.bioenergylists.org</a>] <b>On Behalf Of </b>Gennaro Brooks-Church - Eco Brooklyn<br>
<b>Sent:</b> June-06-12 8:03 PM<br><b>To:</b> listserv Green Building new<br><b>Subject:</b>
[Greenbuilding] surface area<u></u><u></u></span></p></div><div><div><p class="MsoNormal">
<u></u> <u></u></p><p class="MsoNormal">
I am building a natural pool and could use some insight into the media used in the regenerative zone.<u>
</u><u></u></p><div><p class="MsoNormal">Typically gravel is used since it creates large surface
area for microbes and lasts.<u></u><u></u></p>
</div><div><p class="MsoNormal">Ideally I would prefer something lighter so it can be more easily
removed when the pool leaks.<u></u><u></u></p></div><div><p class="MsoNormal">I considered
crushed brick but dust could be an issue.<u></u><u></u></p>
</div><div><p class="MsoNormal">I salvaged some Spanish S tile I could put in and cover with gravel. I
wouldn't break it I would just put it in the way it comes stacked on the pallet. Any thoughts on how that
would compare to gravel in terms of surface area? Keep in mind that microbe surface area is different than
surface area we can see.<u></u><u></u></p>
</div><div><p class="MsoNormal">Using safety netting from job sites would have amazing surface area
but I am not interested in the leeching possibilities.<u></u><u></u></p></div><div><p class="MsoNormal"><u></u> <u></u></p>
</div><div><p class="MsoNormal">Any thoughts?<u></u><u></u></p></div><div><p class="MsoNormal" style="margin-bottom:12.0pt"><br clear="all">Gennaro Brooks-Church<br>Director,
Eco Brooklyn Inc.<br>Cell: <a target="_blank" href="tel:1%20347%20244%203016" value="+13472443016">1 347 244 3016</a> USA<br>
<a target="_blank" href="http://www.EcoBrooklyn.com">www.EcoBrooklyn.com</a>
<br>22 2nd St; Brooklyn, NY 11231<u></u><u></u></p></div></div></div></div></div>
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</greenbuilding@lists.bioenergylists.org></alan@abramsdesignbuild.com></div></blockquote></body></html>