PH, EC, and TDS meters

fragileassassin

Well-Known Member
Honestly you can use whatever scale you want as long as you get comfortable with taking readings and what that number means to you and your plants.
I also agree with this 100%
I use the 700 scale on mine because thats what it was set on when I plugged it in so thats the set of numbers I learned. The only possible issue with which you pick is communicating your readings with others. Ive confused myself trying help people more than once until I got in the habit of assuming most ppm readings here are 500.
 

Phat J

Well-Known Member
I agree and as lazy as I am I have things I must do so why make other tasks take more time. I like my stirring plate, to hell with mixing dry salts by hand.
I'm switching to Jack's and I saw your post about a mixing plate a 1/2 gallon jars. $35 for a plate and $10 for a 6pk of jars, was a no brainer, thanks for the tip.
 

Budget Buds

Well-Known Member
I bought the Milwaukee ph and ppm meters and am totally happy with them https://www.ebay.com/itm/Milwaukee-Instruments-MC110-pH-Continuous-Monitor-Meter-SMS110/271676377142?hash=item3f412c8836:g:nvMAAMXQs8FSNolU the ppm meter looks the same, It's awesome to just glance at the wall and see my numbers
2 yrs, never needed to change the probe... they're around 35 bucks.... I check calibration once a month. It's never needed to be adjusted
Go figure today I needed to adjust my ph meter after over a month of sitting in the storage solution....... It needed to be adjusted 0.1 point lol
 

icetech

Well-Known Member
Go figure today I needed to adjust my ph meter after over a month of sitting in the storage solution....... It needed to be adjusted 0.1 point lol
Checked my apera last night and it was off by .08... i'm heartbroken :( i love this pen.
 
I gave in and bought a bluelab guardian. I was realistic and realized I can't be bothered to go down there and manually check shit every day.
With this, I can open the basement door and check it without even going down the steps. Some days its lucky I do that so I know I wouldn't go down and manually check it.
I've been using it for nearly 2 years and calibrate it randomly when I remember, but it hasn't needed any adjustment yet.
After having this, I will buy another one or similar system when this ones dies.
Preach man, I have the hanna which is pretty much the same. its been going strong for years and the only thing that has saved my ass
 

Growoolit

Well-Known Member
Checked my apera last night and it was off by .08... i'm heartbroken :( i love this pen.
Don't be overly concerned. You only need to replace the meter (I have been told) when you run out of calibration. My meters have not made it that far along (yet).
 

waterproof808

Well-Known Member
Well, my less than a year old bluelab PH Pen crapped out on me last month.
7.0 solution would calibrate at 10.0 and 4.0 would calibrate at 7.0. Cleaned it well and soaked it in storage solution for 24+ hours and same thing.

Still under warranty, so I sent it to their USA center almost a month ago and they have been REALLY bad about communicating the return status. Have had to email them several times about it and last week they said they would check with the warehouse and get back to me.

Luckily I still have my pH drops and my feed is pretty dialed by weight that I dont need to rely on checking pH too much but I would expect better customer service from a company like Bluelab.
 

Renfro

Well-Known Member
Well, my less than a year old bluelab PH Pen crapped out on me last month.
7.0 solution would calibrate at 10.0 and 4.0 would calibrate at 7.0. Cleaned it well and soaked it in storage solution for 24+ hours and same thing.

Still under warranty, so I sent it to their USA center almost a month ago and they have been REALLY bad about communicating the return status. Have had to email them several times about it and last week they said they would check with the warehouse and get back to me.

Luckily I still have my pH drops and my feed is pretty dialed by weight that I don't need to rely on checking pH too much but I would expect better customer service from a company like Bluelab.
I always have at least two functioning pH meters just because I never know when one is gonna fail. Unlike EC meters they are perishable (the probe is at least) so It's not if, but when it will fail.

I will say that most any company now days seems to be lacking in the warranty area. It's not their priority. I believe they could get more business through word of mouth if companies provided above and beyond after the sale support. So many places even go so far as to have two different numbers, one number for sales. That phone is promptly answered by cheerful people that are ecstatic to help you hand over your money. The other number is for support/warranty. This phone is usually answered by a machine that intentionally takes all day, talking slow as fuck, to walk you through all the basics (like resetting the cable modem lol) and if you finally push enough correct buttons to get the call forwarded to a real human they just hang up on the call so you have to wade through the mire of the automated phone system again.
 

Renfro

Well-Known Member
Just out of curiousity, do you guys use soaking solution? I just use a bit of distilled water for mine usually..
For my EC meters I don't do anything like that. I just use and rise with rater. I have a truncheon and a cheapo sunleaves that is my go to as it's super accurate and has been reliable for the last 12 years. Mine is older and looks a little different than the new version, is tan/grey with a blue top. I have heard of cleaning with vinegar but I have never felt the need. I suppose if you have a continuous PPM monitor where the probe is constantly immersed that a good clean would be a good idea though. Just remember that you don't want to scrub the probe bits with anything.
 

rkymtnman

Well-Known Member
Just out of curiousity, do you guys use soaking solution? I just use a bit of distilled water for mine usually..
when i first got my Milwaukee, i contacted them to ask about the best way to store the probe. tech support said rinse off in white vinegar and store in distilled. same probe from about 8 years ago. still accurate as hell.
 

Renfro

Well-Known Member
Ordered some calibration solution, been awhile.
Thats one thing I really like about the truncheon. It doesn't even have a calibration function, it doesn't need it. That said my old ass sunleaves meter is deadly accurate when I have stuck it in calibration solution it comes up within a few PPM, like 3 or 4 PPM max difference. Just have to wait for about 30 - 45 seconds for the ATC sensor to read the solution temperature.
 

rkymtnman

Well-Known Member
I wonder why they say to do that. I have always been told store an EC meter with a clean, dry probe.
i was talking about my pH meter. my EC meter has never been cleaned: just shake it off and put the cap back on. it's about the same age 8+ years.
 

Renfro

Well-Known Member
i was talking about my pH meter. my EC meter has never been cleaned: just shake it off and put the cap back on. it's about the same age 8+ years.
Generally pH meters need to be stored with KCl solution to preserve the probe. But hey, if it's still working after 8 years, thats gotta be a record for a pH probe, then you gotta be doing something right. I have been told by the Apera rep that distilled water is the worst to store their probes in as it leeches ions from the KCl from the probe or some shit. lol
 

Renfro

Well-Known Member
Drop a cheap ph pen in your res 1 time
Yeah, don't do that... lol I pull a sample and test in a cup. Actually I have found that some pH pens will get a wack reading if I don't pull a sample from a res that has air stones going or a water pump running. Cheap pH pens piss me off anyway because an inaccurate pH reading can cause more harm than just not knowing the pH. Once I bought several different cheap pH pens to see if any of them were good. It was hilarious. Some wouldn't even calibrate brand new. They rarely ever agreed on anything and I ended up just tossing them. Now I keep the Bluelab Soil/Liquid pen and an Apera PH60S (spear probe) and I also have a bluelab liquid only pH pen. I just wanted one in each room for convenience but in the end I find myself going to get the Apera or just keep it in my pocket because it gets a stable reading faster and has the extra decimal of precision.
 
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