dantra, that
Dupla Duplarit G{ranular} sounds great!
http://www.aquariumconnection.com/ge....php?ID=539666
http://www.petsolutions.com/Duplarit...-C-B-1-B-.aspx
where else have you found it for sale? post a link
here's some interesting Duplarit reading...
http://www.aquabotanic.com/latr.htm
http://www.dupla.com.au/pages/10goldenrules.php
shame I didn't read about this a 2 Months ago when I was setting up a
new tank with inert 1-2mm course sand... oh well. too late to add it now.