Hust17
Well-Known Member
Yupppp. Its been sooo cold for about a week now but it’s supposed to be around zero for the coming days. Phew, almost froze to death a few times!!canada? its chilly and windy here but only close to freezing. sunny too.
Yupppp. Its been sooo cold for about a week now but it’s supposed to be around zero for the coming days. Phew, almost froze to death a few times!!canada? its chilly and windy here but only close to freezing. sunny too.
If you read the docs for most PPM and TDS meters they say that the reading is an estimate. That's because they are actually measuring EC and then doing the multiplication internally. Since EC is what you're actually reading, it only makes sense to use that as the data point. (And not some made-up number that gets you "close" to expensive sensors.)Why though? I'm asking honestly.. i have always used ppm and never got around to understanding EC, what makes ec better other than none of the 500-700 scale shit?
Nice!just wanted to come back to update- after being urged by many to measure in ec rather than ppm i finally did, turns out my 1200+ppm solution was 1.9ec and that high concentration was pushing my ph down. refilled my res last wednesday and set to 1.3 ec, ph has stayed perfectly stable at 5.9!
I have always had bad ph swings myself and lately have switched from 1000-1050 down to 700-800 and my ph stays much more stable I think i'm at 1.4ec.. haveonly started using ec myself a few days ago..just wanted to come back to update- after being urged by many to measure in ec rather than ppm i finally did, turns out my 1200+ppm solution was 1.9ec and that high concentration was pushing my ph down. refilled my res last wednesday and set to 1.3 ec, ph has stayed perfectly stable at 5.9!
That General Hydropinics uses it, is a good reason to keep on using it. Would be better if GH would use EC as well. Or at least all the ppm scales.I cant get over 1.2ec max. But i use ppm .5 scale for two reasons. One, my nutrient company (gh) feed chart is in ppm .5 scale and Two i can notice smaller changes in my ppm.
That flowing solution is the issue.. even in my DWC i have to turn the airstone off or i get numbers bouncing around.. i would find something you can block the flow from hitting the pen while you do a reading and see if it works better.Is it normal for a ppm pen to fluctuate when in solution?Mine jumps around 30~50 never settles on one number.This is in a flowing solution.
1.02ECmy ppm monitor changes in increments of 10, ie 500, 510, 520. So 500 ppm .5 scale is 1ec what ec is 510?