[papercreters] Re: Papercrete as growing medium

It turns out crop plants like varying ranges of pH upto pH 8. Moulds grow upto pH 10, so presumably all the usual papercrete mixes are above pH 10.

So... I'll need some very cheap mouldproofer. Anyone any ideas?



--- In papercreters@yahoogroups.com, "prrr.t21@..." <prrr@...> wrote:
>
> Mix
> ---
>
> You folks have a lot more experience than me with weak papercrete mixes, so what would you suggest? I'll do one with just pulp, and probably 2 with differing amounts of cement. Cost is critical, if cement cost per stick exceeds 30p (1.9kg) then its not doable, and I really want something much cheaper.
>
> The other question is how to treat the papercrete after casting so it doesnt burn plant roots?
>
>
> thanks
>




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