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sweetolmaryjane
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Anyone got a recommendation on an accurate PH tester. I have 2 different 25$ digital testers from amazon. I have calibrated them both correctly. Yet when I PH my water both say completely different numbers. If one says 6.25 the other says 7.05. Very frustrating and I don't wanna spend money on another piece of trash. (What's really frustrating is when I put both of them back in the calibration solution they say the correct number. If I put it in the 4.01 they both read the 4.01. but when I put them in diluted water or my rez, they are both out of whack)
Not sure, on the temp thing, but do know it’s significant when checking PH in pools...Could that be why its so inaccurate. The water temp? I wasn't aware that was a factor. I mean it isn't one of the ones that tell.me the water temp...
agree, $40 new hannah seems ok so farI’ve had for several years it’s a Hanna HI98127, calibrates fairly easily, works for me, around $90. Just PH, without temp sensing you can get the model HI98107 for around $40.
I use the Bluelab Guardian. It has worked great for me as long as I keep it calibrated. Just need to glance into tent to see E.C., reservoir temp, and PH.I've been using bluelab tds and ph pens for the past decade, and highly recommend them. One I used for almost 6 years before it eventually started reading a bit slow. I gave it to a buddy who still uses it. I've had the last one for 4 or 5 years and it still works perfectly. You just need to change the battery once a year or so, keep it properly stored in a high ppm KCL solution, and never expose it to reverse osmosis or distilled water. Only ever test solutions with nutrients in it, or hard tap water.
Mine is still spot on when I calibrate it and gives a stable reading in well under a minute.
[/QUOTE]Don't expose it to distilled water? Both of my pens specifically state to rinse it out after each use with distilled water.
Especially when calibrating.
I rinse with distilled water put the cap back on and store it dry. What is the solution you store yours in exactly?
QUOTE="Dirtbag, post: 2233060, member: 102084"]I've been using bluelab tds and ph pens for the past decade, and highly recommend them. One I used for almost 6 years before it eventually started reading a bit slow. I gave it to a buddy who still uses it. I've had the last one for 4 or 5 years and it still works perfectly. You just need to change the battery once a year or so, keep it properly stored in a high ppm KCL solution, and never expose it to reverse osmosis or distilled water. Only ever test solutions with nutrients in it, or hard tap water.
Mine is still spot on when I calibrate it and gives a stable reading in well under a minute.
thats how I wound up using just the drops after double checking my pens a hundred times or so you get the idea of what your looking for with the drops.I still have a Hanna pen 4 and 7 calibration fluid and hcl that just gather dust now lol.All that stuff is like $150 bucks,a liter of drops is 12 bucks...Blue lab is the best I’ve ever used. But once they get some age start double Checking occasionally, I just went through a horrible experience in flower and veg room.View attachment 859009use this for double checking View attachment 859010
Blue lab is the best I’ve ever used. But once they get some age start double Checking occasionally, I just went through a horrible experience in flower and veg room.View attachment 859009use this for double checking View attachment 859010
It was over 1-1/2 old it was testing at 7.0. When I mixed nutes and tested it was saying 6.0. I tore my hair out trying to figure out what was off. I have a very strict way of growing I don’t change much of anything at all. Turns out it was 2 points high ph was 8 not 6.0.What happened do you know? Did the pen just crap out on you?
Good point about having drops on hand for cross reference though. Should always have a backup for a ph tester.
Whoa... That's catastrophic. Hopefully you have better luck with the next one.It was over 1-1/2 old it was testing at 7.0. When I mixed nutes and tested it was saying 6.0. I tore my hair out trying to figure out what was off. I have a very strict way of growing I don’t change much of anything at all. Turns out it was 2 points high ph was 8 not 6.0.
ok was referring to my own local hydroshop cheapest one is 125$, planning on getting the hanna they have there its 159.99I’ve had for several years it’s a Hanna HI98127, calibrates fairly easily, works for me, around $90. Just PH, without temp sensing you can get the model HI98107 for around $40.
thats how I wound up using just the drops after double checking my pens a hundred times or so you get the idea of what your looking for with the drops.I still have a Hanna pen 4 and 7 calibration fluid and hcl that just gather dust now lol.All that stuff is like $150 bucks,a liter of drops is 12 bucks...
https://www.amazon.com/General-Hydr...gateway&sprefix=ph+tester+drop,aps,141&sr=8-5I have never here of drops. Where could i find more info on them
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