"Schumann generator are not placebo at all, it is way more audible than atmosphere ionization ..."
I fell asleep next to the SG I purchased and woke up with an upset stomach (I rarely have them - not even once a year).
Following this I experienced the same if it was left on for more than 20-30 minutes.
It definitely affects my stomach, but it's difficult to judge sonics while experiencing a stomach ache.
Has anyone experienced ill effects with the salt lamp - sore tongue?
DeKay