mix the Micro (5-0-1) at full strength if you wish (dilute by half, if using stronger nutes)... spray the undersides of the leaves in the 'mornings', when the plant's pores are open ... the drop of detergent just acts as a 'wetting agent', (cuts surface tension), helping the mist stick to the leaves better ... your 6.7 pH is perfect as it is ... :smokin: