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Stabilising PVC
Sandro Bombardieri wrote:
>
> Mike,
>
> If you are using PVC tube ensure that the pipe is calcium-zinc stabilised
> not lead stabilized. Lettuces make great accumulators of heavy metals.
> I would use the pipe in a NFT fashion or even as flood and drain.
> Using a medium will restrict root growth and will require frequent flushing
> with water to eliminate any salt build up.
>
> I have a few formulations for tomatoes. One of them is my own formulation.
> Some are a three stage. Being a chemist i enjoy making up my own mixes, as well
> as cracking existing recipes.
>
> Two of my friends are commercial growers. One is an Aquatic plant grower and
> the
> other a rose and tomato grower. I have from time to time made crop specific
> mixes with great success.
>
> see ya
>
> sandro
>
>
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