Yeah.. what he said.Why would you want to rapidly change the PH of your soil?
ph up and down adjusts the water you plan to give to your plants no matter what medium they are in, soil, soiless, rockwool, hydroton, whatever it may be. It is a good idea to give your plants water at the proper ph for nutrient absorbtion.Thanks for the info. I was just concerned that if the PH was off I wanted to get it back to where it should be as fast as possible. But I see that that is not a good idea. This ph up and down product you are referring to..is it also good for soil? Just never heard of it (of course I am a novice on the growing side of this!)