OK. I finally broke down and bought a pH test pin, a PPM test pen and a soil tester. First question is about ppm. I fired up the pen and stuck it in a measuring cup full of my tapwater and it read 213 ppm at 29 Celsius. Is that OK? Second question I’m told that I should calibrate my pH pan by getting distilled water putting the pH powder in it In calibrating twice. I hate to sound stupid, but why not just test a freshly opened a container of of distilled water and see if the pen reads seven?
Ppm
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I'm not sure if every distilled water will be 7 I use 7.0 calibration fluid but I would just use the powder like you said but you only have to do it once well I do .also that's not to bad a starting water mines about 170 ppm
J
As for the distilled water , My understanding is that “fresh” distilled water is going to be seven unless you’ve opened it and allowed some carbonic acid to form from interaction with CO2
Well that’s gonna be its starting and finishing point at 213. LOL
As for the distilled water , My understanding is that “fresh” distilled water is going to be seven unless you’ve opened it and allowed some carbonic acid to form from interaction with CO2
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EC Pens and PH pens are scientific instruments and need to be treated as such. Calibrating with an unknown will lead to errors in the crop. You need to do a two point calibration following the Mfg. instructions. Using fresh calibation fluids. Store them according to instructions. I learned this shit the hard way. I lost a 6 plant grow just 3 weeks short of harvest because I trusted a faulty PH pen. You do not need to experience this pain.
Well this is my eighth grow and I’ve only lost one and I’ve never had one of these pens. So should I just hide it in the back of my cupboard and keep hearing little droplets of vinegar to my tapwater? Because you’re kind of freaking me out man! LOLEC Pens and PH pens are scientific instruments and need to be treated as such. Calibrating with an unknown will lead to errors in the crop. You need to do a two point calibration following the Mfg. instructions. Using fresh calibation fluids. Store them according to instructions. I learned this shit the hard way. I lost a 6 plant grow just 3 weeks short of harvest because I trusted a faulty PH pen. You do not need to experience this pain.
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Defo get calibration fluid, storage fluid and ppm fluid too. Looks after your investment and makes sure you are putting in correct values.
I get my fluid from my local hydro for £2.50 each bottle of calibration fluid and £3 for storage. Cheap as chips.
To be fair my ph pen has never been off from what is was supposed to be, I do check it weekly and recalibrate anyway.
No need to panic, these tools will come in handy along the way for diagnostics, not just with you feed.
Cheers,
EP3
I get my fluid from my local hydro for £2.50 each bottle of calibration fluid and £3 for storage. Cheap as chips.
To be fair my ph pen has never been off from what is was supposed to be, I do check it weekly and recalibrate anyway.
No need to panic, these tools will come in handy along the way for diagnostics, not just with you feed.
Cheers,
EP3
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That might actually be better than to rely on a faulty PH reading. You surely have got in to tune with your plants in your previous grows. Not so long ago that is all a farmer had. It is a valuable skill.
I just wanted see how effective my vinegar method has been. I have an advantage of knowing what the water is at the treatment plant. They say eat and this thing without calibration said it was about 7.85 to 7.9 so it’s kind of close right out of the box. I was just hoping to try to avoid buying some distilled water. LOL I’m just waiting until my new 73 µm bag gets here so I can make a single trip to the supermarket that has dry ice and distilled water. LOL first thing I’d like to do is check the leftover gallon of my old megacrop that I have sitting in the kitchen. That will give me a rough idea of what I was pouring on my plant last grow.
Hopefully, every grow, I’m getting closer and closer to eventually doing this right. LOL I went back to bio biz light for this grill. My old bag got contaminated during the tropical storm we had in the fall so I had been using black bag miracle grow organic soil for the last row. Worked like it had before but I don’t think it worked as well as the Biobizz
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