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Stuart Noble · 01-12-2007, 11:16 AM posted to uk.rec.gardening

Charlie Pridham wrote:
In article ,
says...
On 1/12/07 08:42, in article ,
"Charlie Pridham" wrote:

Recently built a wall, on the shady side of which I intend growing plants
that like acid soil conditions, my intention is to remove some soil (and
therefore the worst of my cement droppings) replace with an ericaceous
mix, my natural soil here is slightly acid, my question is how much lime
will the new wall leach into the soil? is there anything that can be used
perhaps to neutralize this? (seem to remember some stuff they used to use
to preserve eggs, changes the chemical composition of concrete, I think
that was called ising glass or water glass) Or will I be ok to leave well
alone?
Isinglass but that's my only available contribution, I'm afraid!

Thats the stuff I was thinking of, does anyone know what it is? (chemicle
wise) I remember using it as a child to grow crystles and later to water
proof a concrete pond and make it safe to introduce fish.
I have to say Dereks Tea suggestion is in the lead at present!

A bit of chemistry re acid soil here

http://forums.gardenweb.com/forums/l...032030051.html