Is kiryu a good substitute for lava? Can’t find any lava!

Horticulture
1

Hi

I was wondering since I m having trouble finding any lava what substitutes could I use? Is kiryu a substitute of lava?
I think that’s what Ryan said in a few videos but not too sure…

2 Likes
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Yes I believe Kiryu is the Japanese lava rock. Hyuga is the Japanese pumice.

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I think lava is actually the substitute for kiryu.
Closest I have found to lava in EU is hortag.

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my take was that it is rather a form of pumice but with different ph properties. Also then a question why it is referred to as “vitamin-soil”.

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Does anyone have the CEC value of kiryu? Or is it just as low as anyone else’s lava rock?

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If your Swiss, try Coop Bau und Hobby, they have lava…