Lime reacts with acidic water to do this acid nuetralizing buffering action. Lime runs out when consistently feeding 5.8-6.0ish water. Anything under pH7.
Promix and sunshine usually run out of pH buffering capabilities at some point.
If you were to feed above pH7 water into a Dolomite Lime ammended soil mixture, that Lime will sit around and not react.
I beileve all deficiencies seen here are caused by a low pH condition, and continuing to feed nutrients which is driving pH down further and since things are locked out already due to incorrect low pH then adding more nutrients which just act as burning salts and don't get uptaked by the roots anyway which has burned up all the Lime and the natural peat pH is taking over. He states he feeds nutrients 3-4 times in a row, then a clean water every 3rd or 4th watering to prevent buildup, while always watering with pH 5.8-6.0.
Need to raise pH to +/- 6.5
(by any means necessary)
edit- That is a Potassium deficiency. Potassium is locked out below pH 6.
