thanks. As I was saying to you earlier in this thread. If you water with larger amounts of water and ph it to about 6- 6.5. You should be fine. I NEVER HAVE tested my runoff or my soil. My plants have been extremely healthy doing it as I have been. Good luck and we will talk more before next time. YOU MUST post photos and stuff (excited) from your harvest. "I wanna see, I wanna see!!"