Hi, In message <529D7AD4.3050606@gmail.com>, Ina Crossley <klazina1@gmail.com> writes >It was also mentioned that moisture readers are no good in pumice and >similar, while skewers work just fine. There are a lot of cheap moisture meters available. They typically have pointy bits of two different metals, I assume they work like a primitive battery. I've had no luck at all with these - it has been suggested they don't work well in the cold. More recently I've seen soil moisture meters that work with capacitance or dielectric sensors - they are not too expensive. I wonder if anyone has tried these? -- David Pilling email: david@pilling.demon.co.uk web: http://www.davidpilling.net/