Strawberry Kush

in flower you have limited choices... h2o2 3% is fine but can also cut it to reduce impact on plant. i wouldn't go below 1-2% concentration. also, get a surfactant of some type -- yucca extact or castille soap etc. othwerwise the water won't spread well. this will eventually singe the pistils.. clarified neem is prolly okay. that doesn't have the dangerous component, 'azardirechtin' (spelling way off, but close enough to recognize) potassium bicarbonate or sodium bicarbonate will change pH and help control it too. copper soap bottle says it can be used up to X days before harvest of edibles, but these aren't edibles... all that stuff did was burn my plant. "cornell formula" is bsically the potassium bicarbonate, surfactant and whatver... it has no 'proof' behind it despite using a university's name.