Sick seedlings 3/4" tall


#546

What should the number be in standard reference solution?


#547

I believe it is 1500


#548

so what would it read on my meter?


#549

I don’t understand what I should calibrate it too?


#550

@bobbi put the meter into the solution and what does it indicate on your screen?


#551

104 but I’ve been messing with it


#552

104 but there is a 10x displayed under that, correct?

or x10?


#553

yes , yes yes


#554

x10 and ppm


#555

ok so that means 1040 ppm. The Solution is 1500 I believe, if you could take a look at the bottle and double check that for me?


#556

solution has 3 numbers on it, tio says 1500 ppm


#557

ok so when you tested the meter in 1500 it read 1040.

On the back of the meter is a small hole. And you have a small screw driver that came with you set. You need to put the screw driver in there gingerly and turn the screw just ever so slightly. I believe clockwise will raise the numbers on the display.

Do you see the small hole?


#558

yes, I have the screwdriver from yellow meter. Now the blue meter in the solution reads 997. ppm


#559

Now it went back to X10 ppm 101?


#560

do you keep it in the solution as you turn it?


#561

Turn it in the opposite direction then @bobbi, I was going from memory so we all know how that goes, lol

If you can keep it in the solution you can do that but it’s ok to take out the meter and then place it back in. Whatever works!


#562

its staying on 996


#563

The screw is hard to adjust. My guess is the screwdriver isn’t on it.


#564

what number am I aiming for?


#565

don’t they sell some you don’t have to calibrate?