Anyone have a reputable ebay seller for the yellow generic ph testers?

Seems like I'm buying a new ph tester every 2 months for $10... Does anyone have a seller on ebay where there DIGITAL ph tester is accurate and lasts?

Meast21 said:

Seems like I'm buying a new ph tester every 2 months for $10... Does anyone have a seller on ebay where there DIGITAL ph tester is accurate and lasts?

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I got one of these great unit.

Bluelab is one of the best

Thanks guys.. I'm more looking for the cheap $10 kind that comes from a seller you had luck with on ebay. Seems like 1/3 of the ones I get are defective or don't last long.

Meast21 said:

Thanks guys.. I'm more looking for the cheap $10 kind that comes from a seller you had luck with on ebay. Seems like 1/3 of the ones I get are defective or don't last long.

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Well you get what you pay for bud.
Maybe you are best off getting a simple color changing drop test kit. No calibration, accurate, easy, cheap.

Meast21 said:

$10 DIGITAL ph tester is accurate and lasts?

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That is the definition of a contradiction in terms

There is no such things as a cheap - in the $10 range - PH tester that is accurate and lasts. They are never accurate, dont stay calibrated, and dont last.

You need to spend at least into the $50 range for one that is accurate and will last about 18 months. Thats how long a decent PH probe lasts on average.

Note that you will actually save money over time. In 18 months you will spend $90 - almost twice what a decent meter will cost. Plus your plants will be much happier growing in a correct PH environment.


I prefer the slightly more expensive version because you can replace just the probe for a slight additional savings over time. Plus you can get an ORP probe if you are into that.


There are lots of other options in the same price ranges from other reputable mfg's.

Edit: Forgot to mention - for any PH probe to last it needs to be stored in a buffer solution. You can use 4.0 calibration solution or some KCL. I use this stuff. A bottle lasts me a year or so. You will also need calibration solutions or packets to keep the meter calibrated. Some KCL and cal solutions will come with Apera sets.

Apera PH60. Get one of those and stop fucking around.

Hannah, I bought a cheap one helped me screw up my grow I have a cheap better one BUT I'm saving up for a much dearer one like the one above, what water are you using btw

Btw Hannah wasn't the cheap one,.just had a problem with another cheap one.

Really.need to save some cash up.

My first recommendation would be to get a good meter. It's one of the most important tools in your box.
The other option is to purchase some electrode storage solution. Sometimes the heads can get dry and need to be reconditioned by sitting in this solution. Ive brought back some meters to life with long enough soaks. Always store your meter in this solution. It will greatly extend the life.