I've found ph rise to be more common than drop . I think it's from evap / transpiration ? I use lots more ph down than up over the course of a grow .

I'm no help w/ AD nutes . I'm a tightwad -n- use G/H 3 part .

Next grow soak the hydroton overnight in ph adj. water after washing the dog livin hell outa it 1st .

Peace
Crispi :stoned: