I bought this and another pH meter at the same time. Used them both to confirm the other's statement. Readings started to drift, so I bought an $80 pH meter to check. This counter is disabled and its readings differ by an INTEGER number. When the other 2 pH meters show 6.2, this one reads 5.1. This is a deal break. And you try to give your ladies water with a pH of 5.1 and tell me how long they will survive it. Not for long I would say. Maybe 3 days if that's the case. What good is a pH meter that doesn't measure the correct pH value? This is worse than not having any, as you will get used to the counter and will really roast your plants. Save money and buy another. Like the Vivosun pH/TDS combo, great. 2FTDS&qid=1596948900&sr=8-5Welcome.
TDS water quality tester - TDS water hardness meter (portable digital salt meter for water analysis)
9 Review
Portable digital multimeter with sound continuity and thermocouple (electric tester) LTX DT-838
7 Review
π PH 1-14 Extensive Storage Testing Monitoring: Optimize Your Storage with Precise pH Level Monitoring
6 Review
Efficiently Test Your Antifreeze And Battery Acid With A 3-In-1 Refractometer
18 Review