hi peak, to be honest mate it seemed to play havoc with my leaves and i didnt really see any major benefits, i still managed to get bugs and even bud rot at the end....... if grown in hydro then u may be able to respond to the changes it enduces by monitoring the ppm,, but in soil or pots then i dont think its a worthwhile investment. i think when used it forces the plant to respond in an unconventional way and makes an imbalnce with the feeding, maybe with constant use u can utilise it to its max potential, but to be honest i just want fdat buds with minimum effort. i still have some and havent used it this grow, i may spray just 1 and see wat happens,, gd luck