Ok this will be my last post on the subject off EC vs ppm then I'll kindly STFU.
ppm is calculated by either using a .7 conversion or a .5 conversion.
If the meter you have uses a .7 conversion you would divide the ppm by 700 to get EC. If the meter uses a .5 conversion you would divide by 500.
Please refer to this chart...
"So what Sparat1k?!" you say, "Whats the big deal!?!"
Well it's a big deal because if you use a Hanna ppm meter and your plant burns at 1500ppm to somebody using a .7 conversion meter that would mean that they would need to get to 2100ppm to get to tip burn.
That's a 600ppm difference or 40%! PPM comparisons ain't apples to apples by a country mile.
So I ask again... Why don't we just convert to EC so we all speak the same nutrient language, its easy, its quick and all the cool kids are doing it
Ok, I'm done. If that didn't convince you guys then I don't know what will.
<- me