Would it be feasible for a grower with a small collection (115 plants) to use a product such as pH down (aquarium supply) to lower the pH of water? I have used fertilizer at the rate that Mr. Pressman recommended and was unhappy with the results. And one more question if I may? If nutrients are most available to plants at a certain pH (I have read 6.5) and if a higher dose of fertilizer lowers pH therefore making the nutrients available, how do we avoid over fertilizing? (My results were poor in sphagnum moss, which I thought was responsible for holding too much of the fertilizer) I suspect that a basic chemistry course would answer this question, but if there is any satisfactory way to answer this question in short it would be greatly appreciated.
Regards, Terri Lewin
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