I agree with jdieck about cleaning your probe. Is your skimmer pulling the same amount of gunk as before you started using this product? This may be helpfull to see if there is an increase export.
Also how long did it take for the ORP to rise when you started to use this product. If it worked fast(under 5-10 hours) then that probley means a oxidizing agent of some sort my be present, if it took longer then it my be more bio whitch I would think would be good
Cool findings for sure.....