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<DIV>What about actual real stones collected from sites?</DIV>
<DIV> </DIV>
<DIV>Robert</DIV>
<DIV> </DIV>
<DIV>
<DIV>In a message dated 6/7/2012 10:12:21 A.M. Eastern Daylight Time,
alan@abramsdesignbuild.com writes:</DIV>
<BLOCKQUOTE
style="BORDER-LEFT: blue 2px solid; PADDING-LEFT: 5px; MARGIN-LEFT: 5px"><FONT
style="BACKGROUND-COLOR: transparent" color=#000000 size=2 face=Arial>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 title=mailto:info@ecobrooklyn.com
href="mailto:info@ecobrooklyn.com"
target=_blank>info@ecobrooklyn.com</A>></SPAN> wrote:<BR>
<BLOCKQUOTE
style="BORDER-LEFT: #ccc 1px solid; MARGIN: 0px 0px 0px 0.8ex; PADDING-LEFT: 1ex"
class=gmail_quote>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 title="tel:1 347 244 3016" href="tel:1%20347%20244%203016"
target=_blank value="+13472443016">1 347 244 3016</A> USA<BR><A
title=http://www.ecobrooklyn.com/ href="http://www.ecobrooklyn.com/"
target=_blank>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 title=mailto:terrain@shaw.ca href="mailto:terrain@shaw.ca"
target=_blank>terrain@shaw.ca</A>></SPAN> wrote:<BR>
<BLOCKQUOTE
style="BORDER-LEFT: #ccc 1px solid; MARGIN: 0px 0px 0px 0.8ex; PADDING-LEFT: 1ex"
class=gmail_quote>
<DIV lang=EN-CA link="blue" vlink="purple">
<DIV>
<P class=MsoNormal><SPAN
style="FONT-FAMILY: 'Calibri','sans-serif'; COLOR: #1f497d; FONT-SIZE: 11pt">Hi<U></U><U></U></SPAN></P>
<P class=MsoNormal><SPAN
style="FONT-FAMILY: 'Calibri','sans-serif'; COLOR: #1f497d; FONT-SIZE: 11pt">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-FAMILY: 'Calibri','sans-serif'; COLOR: #1f497d; FONT-SIZE: 11pt"><U></U><U></U></SPAN> </P>
<P class=MsoNormal><SPAN
style="FONT-FAMILY: 'Calibri','sans-serif'; COLOR: #1f497d; FONT-SIZE: 11pt">Best<U></U><U></U></SPAN></P>
<P class=MsoNormal><SPAN
style="FONT-FAMILY: 'Calibri','sans-serif'; COLOR: #1f497d; FONT-SIZE: 11pt">John<U></U><U></U></SPAN></P>
<P class=MsoNormal><SPAN
style="FONT-FAMILY: 'Calibri','sans-serif'; COLOR: #1f497d; FONT-SIZE: 11pt"><U></U><U></U></SPAN> </P>
<P class=MsoNormal><SPAN
style="FONT-FAMILY: 'Calibri','sans-serif'; COLOR: #1f497d; FONT-SIZE: 11pt"><U></U><U></U></SPAN> </P>
<P class=MsoNormal><SPAN
style="FONT-FAMILY: 'Calibri','sans-serif'; COLOR: #1f497d; FONT-SIZE: 11pt"><U></U><U></U></SPAN> </P>
<DIV
style="BORDER-BOTTOM: medium none; BORDER-LEFT: medium none; PADDING-BOTTOM: 0cm; PADDING-LEFT: 0cm; PADDING-RIGHT: 0cm; BORDER-TOP: #b5c4df 1pt solid; BORDER-RIGHT: medium none; PADDING-TOP: 3pt">
<P class=MsoNormal><B><SPAN
style="FONT-FAMILY: 'Tahoma','sans-serif'; FONT-SIZE: 10pt"
lang=EN-US>From:</SPAN></B><SPAN
style="FONT-FAMILY: 'Tahoma','sans-serif'; FONT-SIZE: 10pt" lang=EN-US> <A
title=mailto:greenbuilding-bounces@lists.bioenergylists.org
href="mailto:greenbuilding-bounces@lists.bioenergylists.org"
target=_blank>greenbuilding-bounces@lists.bioenergylists.org</A>
[mailto:<A title=mailto:greenbuilding-bounces@lists.bioenergylists.org
href="mailto:greenbuilding-bounces@lists.bioenergylists.org"
target=_blank>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 style="MARGIN-BOTTOM: 12pt" class=MsoNormal><BR clear=all>Gennaro
Brooks-Church<BR>Director, Eco Brooklyn Inc.<BR>Cell: <A
title="tel:1 347 244 3016" href="tel:1%20347%20244%203016" target=_blank
value="+13472443016">1 347 244 3016</A> USA<BR><A
title=http://www.ecobrooklyn.com/ href="http://www.ecobrooklyn.com/"
target=_blank>www.EcoBrooklyn.com</A><BR>22 2nd St; Brooklyn, NY
11231<U></U><U></U></P></DIV></DIV></DIV></DIV></DIV><BR>_______________________________________________<BR>Greenbuilding
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