2 in 1 Temperature pH Monitor Meter Tester Sensor Test Kit 0~14.0 pH Automatic Buffer Recognition BNC Electrode Probe for Hydroponics Aquarium Lab Testing Food Drinking Water pH of Saltwater/seawater

This monitor is ideal for the strict PH regimen I have to follow. It is very accurate and easy to operate. The directions are clear and it comes with the calibration materials. I was impressed. I use it at least 2 times a day to keep good PH levels. The temperatures I am not to worried about but it tells me that as well if needed. Very nice tool and would really recommend it to all at this price point.

So I only monitor PH and Temperature in my nutrient solution a few times a day so I thought why buy the expensive unit with the automatic pump to adjust the PH if I am away during feeding. I open the door, turn the unit on, look at my beautiful plants, look at the monitor, adjust if needed then turn it off and shut the door. Works perfect. No need to leave the unit on all the time if you are not sitting there monitoring the monitor all the time. The unit came with the PH sensor wet and was spot on with my hand held monitor. You won't regret this purchase as long as you understand it's purpose. Cheers my friends. Stay Lifted!!!

For those that have bought several Ph monitors in the past, you know that the price point for something built for longevity is over $100. Replacement double junction probes alone start at $60-$70, so walking into this I didn’t expect a lot.I ordered two and was impressed with the build quality of the unit. It’s solid and heavy, and actually feels in the hand to be a better build quality than other monitors for $80-$90 that come with a probe. The calibration was so easy I did it a few times because I thought I was doing something wrong (the unit self-senses the area it needs to calibrate to depending on the calibration fluid).One unit worked well and is still working well a couple of months later (with the original probe, but I plan to replace the original with a double junction probe down the line). The second unit appeared to short out when the temperature probe and the ph probe were I. The same water (I took out the temp probe, it read ph, I took out the ph probe, it read temp, I put both in, I got “——“.I contacted the company about the faulty unit and they had be do a few tests over a couple of days to determine what was happening with the unit. After a few days the company confirmed the unit as faulty and replaced the unit. The replacement I received I’ve been using for 3-4 weeks now and no issues whatsoever.Remember, you get what you pay for, and I’ve not seen too many places that sell a unit with a probe for this price. I’m very pleased with the purchase.

The PH probe only worked for about 5 minutes before it increased from 6.7 (where my tank actually is) to 8.63. Once it hit 8.63, it remained stuck on that reading until I reset the meter. After reset, it will work for about 5 more minutes, and then fail again. I've had this meter set up for 3 days, and I've calibrated it every day thinking that the probe was bad. It's not the probe; it's the meter itself. Disconnecting the probe does not change the reading when it fails this way. I'll be returning this unit ASAP. I had high hopes for this compact meter, but unfortunately, I have to recommend people look elsewhere.Edit: I was informed by the seller that this meter has a power saving function. The first 5 minutes the meter will take a reading every second. After 5 minutes it will only take a reading every 10 minutes to save battery power. This explans why I thought the readings were frozen, but it does not explain why there is such a large change in PH readings between the constant mode and the battery saving mode.

Inaccurate reading very disappointing

This needs to be calibrated which is annoying but works after that.

I have this in my 72gal fish tank monitoring the pH, especially since my deep well water pH changes with the season. The display is very readable, and the clips on the back *almost* clip over my LED tank light. May have to 3D print some wider clips. Good value.

Long time reefer. Thought I'd give this cheap ph probe a try while trying to investigate an issue. Worked well for 12 days in my sump. Checked every day and on the 12th day it went from around 7.9 to 8.7. Two stars for the fact that it has a thermometer for verifying my temp controller is in check.