I made my own soil and here is the mix:
70% Canna
10% Perlite
10% Worm Castings (1-0-0)
10% Bat Guano (9-3-1)
I water with Distilled water (which should be a pH of 7), but when I check the irrigated water with my pH tester it says that its an 8!
I'm confused by this. I was under the impression...