No apologies necessary, iif you can get some of the litmus strips you can check the accuracy of your pH meter at any time and they're really cheap, thought mine was accurate and was a whole number out which made all my water and feeds too acidic, worth a lookYa unless it's my pH stick is not reading correctly..I calibrate it every two weeks...and I'm buying a good one this week so...maybe that's the issue thanks... I didn't mean to put this on this thread meant to go in my grow journal.....sorry...