Anything homemade that can work for nutrients?
I'm trying to get to a point where I can get things myself without relying on buying stuff from the store. Is there anything that can be easily made at home that can be used for hydroponic nutrients? There has to be something that can be easily made if its true what I read that they used hydroponics in ancient egypt. Not worried about optimum as long as it works, the only thing I want to worry about is PH levels.