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Cornelius Reviewed by Cornelius on . Quote from Latewood "*week 4/5 of flower. drop ph to 5.4 to make PK nutes more available to plants. increase the ph each week .1... i.e. wk4-ph5.4, wk5 ph5.5, wk6 ph5.6, wk7 ph5.7, wk 8 5.8 finish...Again; If you require longer finishing time, You hold off on this ph transition. **most of the time, calmag+/LK will buffer the water's ph and you don't have to adjust." Can you please explain how dropping the Ph makes PK nutes more available to the plants. I am starting my 5th week today and I am thinking about Rating: 5