Was wondering what pH meter everyone else uses? I bought the Jellas one 3 months back and it has been horrible. The calibration is horrible and it always jumps up/down with no rhyme or reason. Was wondering if it was worth it to just buy a $100-200 self calibrating pen. I've just been using distilled water/pH down to control the pH for now but know I'll actually need to get an accurate reading if I want my grow to go well. I'll post a picture of it below
Any one with a bunch of five star reviews really, I've ordered a bunch of cheap ones like above and they all work great, had the same reading.
Blue labs. Don't trust a self calibrating meter. Get the pH 4 and 7 calibration solutions and the KCL storage solutions. Calibrate the meter monthly and learn the do's and dont's abot pH meters and it'll stay perfectly accurate for a very long time. Never, ever leave the probe sitting in water. That's a quick way to permanently pooch it. Sent from my iPhone using Grasscity Forum
I have the yellow one you posted and another grey one, along with a couple probs, I've used the more expensive pens and they don't show different reading from my cheaper ones. I'll check for the link if I still have it on amazon.
Hanna Piccolo. It's slow to read, but it almost never needs calibration and works very well. Plus I got it for $30 on eBay, so score.
I have a Bluelab Guardian and I've had it for about 4 years with no issues. Plus it comes with a 5 year warranty. It's a quality product. You get what you pay for. Sometimes it hurts to spend a lot but you won't have to buy another for a very long time. Sent from my iPad using Grasscity Forum
No calibration required. Always accurate. No 7.0 and 4.0 calibration solutions. No storage or cleaning solutions.
I'm sorry, but I'll always take a digital with a firm number over a "guess the exact shade for accuracy."
I understand what your saying but I've never found that perfect pH accuracy is necessary - in fact I believe that varying the pH a bit with your feedings makes sure that all of the elements are always available to the plant. As long as my nutrient solution is yellow I'm good to go. I did find that the colors on the bottle were off a bit so I use this for color reference - plus it gives me the .5 colors as well to get closer yet. Different strokes.
I use this one: Digital LCD PH Meter Soil Aquarium Pool Water Wine Urine Pen Tester Analyzer NEW | eBay Easy to calibrate using the calibrating solution. I made some storage solution using the 4.0 and table salt (google it). I test it weekly and it has not needed any calibration. Works great.