[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]

Re: [APD] sand

On 15/09/2011 20:54, RMGTBTS at aol_com wrote:

yes sand does not interact with H2O. Would not be a lot of beaches.

Since when?

Sand is mostly calcium carbonate, ie the dead shells of invertebrate animals. Course it dissolves in water! It is what gives water GH and KH. :)

Stuart Halliday
200 Million years in the making...
Aquatic-Plants mailing list
Aquatic-Plants at actwin_com