Pond Boss Forums INTRO Questions & Observations New pond ph 10.3, will stocking minnows lower ph?

Calibrate your pH tester pen. Verify with the testing lab that the pH will be stable once you send it to the lab. pH can can change over time depending on conditions. Our PBoss magazine chemist Dr. Boyd says if samples are sent to a laboratory they should be held in the dark and analyzed asap to avoid pH changes.