Verite said:Peruvian seabird guano makes for a great ph up subst.
BBWluva said:just 1 gal at a time,i got a very small kitchen measuring spoon and marked it so i know how much to use each time with out guessing.
BongSong said:I'm a student of soil in this forum. What is typical for your pH, tries to drift up, or down?
C21H30O2 said:any commercially available products that are certified organic?