[Pavel Chaloupka]

Of course it occures in nature but if you have a look at the composition of all the substances that makes water acidic on Paro’s localities, it will be a negligible part of all these. If you have p.a. or some other very pure quality substance, as I said, you may probably use it as any other acid. I say probably as it’s anion is a part of cycrate cycle. I am not sure about how these are capable to penetrate cell membranes if in high concentration, so it could be dangerous to some extend. Paros are capable to handle extreme concentration of complex macro and micromolekules of humic and fulvic acids, but these are proven to be good for cell metabolism. I think high concentration of malic acid in the environment is at the very least not phisiological.