lusidghost
Well-Known Member
I wonder how many people saw this thread and grabbed one. I hope everyone has the same luck as me. I'm about to see if it has made it to day two.
Cheap Bluelab PH Pens Here
- Thread starter lusidghost
- Start date
lusidghost
Well-Known Member
Eh. Still going.
Star Dog
Well-Known Member
I expect a few would, it's half price it's a good time to buy one lol.
I usually use litmus paper. 180 inches of it for $16. The one I use is for the range 5-9 pH. No calibration or batteries required. I use about an inch at a time.
In fact, my pH has tested good so consistently over the years that I usually only test at the beginning of a grow, just to make sure nothing has changed dramatically.
This is the one I use.
In fact, my pH has tested good so consistently over the years that I usually only test at the beginning of a grow, just to make sure nothing has changed dramatically.
This is the one I use.
lusidghost
Well-Known Member
I used to use strips, but I was mixing like 8 five gallon buckets at a time and it was a total pain in the ass. They are reliable, but a pen is just quick and easy. Like I said, my last one made it 6 years almost to the day. I think I had to change the batteries once, maybe twice.
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Coco-garden
Well-Known Member
cannabineer
Ursus marijanus
Are there instructions for calibrating the pebbles?Open box and pebbles fall out
lusidghost
Well-Known Member
That is a good deal right now. They were $64 on Amazon about a month ago. I'm not sure if it's global politics or just spring pushing up demand.
lusidghost
Well-Known Member
I checked the PH again today and it's still trucking. I'm going to say each day is 70 cents worth, and if it lasts a year then it paid itself off. I'm up to a buck forty.
Coco-garden
Well-Known Member
How long do these pens typically last?
lusidghost
Well-Known Member
Still working and holding accuracy.
nobighurry
Well-Known Member
I typically get a year sometimes a little longer before they won't calibrate
lusidghost
Well-Known Member
So this pen was reading the 7.0 really well, but when I tried to calibrate it the 4.0 was reading 4.9. Then the calibration failed. The gamble did not pay off. I ordered a new one from Amazon that will be here Sunday.
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