Hello Growers,

I'm interested in the Bluelab pen for EC/TDS levels of the water and tea I'll use to feed my plants growing in organic soil. Some user is saying that the pen doesn't read below 100ppm although the specs say 0 to 5000.
From the local water report in my area, water hardness should be between 27 to 30 ppm...I've never checked it but if this is accurate it's a good ppm level to start with.
pH level range is 7.2 to 7.9 based on the same report, a bit on the alkaline side of the scale. I haven't adjusted the pH level in my outdoor grow last season and at some point in early flowering I started to see a strong yellowing of the leaves with subsequent falling off. I also had to leave the plants unattended for a month with only automatic water irrigation, so they may got shocked but lack of nutrients too.
I decided to be a bit more aware of pH and TDS levels going forward. If the water report is accurate on pH levels I need to do some small adjustments to bring it down to at least around 7.0 which should be a good level for my growing medium.

As far as ppm I would be more interested in where the values is on the teas...

anyway, I was curious about the accuracy of the EC/TDS pen and if anyone has noticed what that user was talking about ?

thanks !