I have not noticed a high reading yet. Only had this Soil / Leaf board running for a few days though.
An interesting write up on the VH400
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC4239887/
An interesting write up on the VH400
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC4239887/

