Thanks Steven. I will do some more investigation in sizes of pumice. They call this washed, I can't see that as when I turned the hose on the top of the bag (having cut a hole in the bottom) there was so much stuff coming out. Back to the drawing board. Ina On 2/07/2013 4:18 p.m., steven hart wrote: > Yes it will Ina, but the fines will retain more moisture > > > On 2 July 2013 13:33, Ina Crossley <klazina1@gmail.com> wrote: > >> I am using pumice in my mixes, but only recently. I bought the 7mm one >> which seems to have a lot of dust and small stuff in it. Does it still >> do it's job of drainage with all the small stuff filling any gaps. >> >> Ina >> >> -- >> Ina Crossley >> Auckland New Zealand zone 10a >> >> _______________________________________________ >> pbs mailing list >> pbs@lists.ibiblio.org >> http://pacificbulbsociety.org/list.php >> http://pacificbulbsociety.org/pbswiki/ >> > > -- Ina Crossley Auckland New Zealand zone 10a