i have the same meter as well works great, takes a little time to stable out when reading (mayb 3-5sec.) but it keeps the calibration for a while, i only calibrated it once, had it for about a 8 or 9 months. Just dropped it in some nutrient water i was mixing this morning and screwed it all up.
View attachment 2042386View attachment 2042387. I was so pleased with its performance that i purchased another one this afternoon, waiting on it in the mail before the end of the week hopefully before my next feeding. I am sure you will love it. So, the lesson to be learned here is to keep a tight ass hold on it when your reading your water samples cause it aint waterproof.
Happy Growing.
