What are the differences between the pH of the water that is being fed to the medium, the pH of the medium, in my case perlite and the pH of the runoff? Any info on this or links will be greatly appreciated.
PH of your medium should be on your bag, usually if it's real stable than its around 7, like roots organic for example the soil i'm currently using. make sure not to use some generic soil from like lowes or homedepot, they cause heavy nute burns even with proper care! always get it from your hydroponics store! just ask questions, but not about cannabis. PH of water should always be around 7 for soil, any higher or lower, will result in nute lockouts. gl and happy growing. -K