Hi @cainofgroth, welcome!
First of all, if you’re using distilled water, ppm should be 0, starting. Not sure what you mean with “in range”? So if you start in distilled water, R/O water or very soft water it is advisable to up your EC to around 0.4 with Calcium & Magnesium before you add your macronutrients. That is 200ppm on the Hanna (500) scale or 280 on the Truncheon (700) scale. Then mix in your macro’s to whatever EC you prefer with your nutrient brand and PH afterwards.
Do you check your PH daily? And your water temp?
No need to get another one! Just divide your reading by 1000. And that’s your EC (in milliSiemens/cm compared to microSiemens as how your meter is reading it now)
So you’re at an EC of 1.3 (1.276 to be exact).
Okay so that’s looking fine. I usually have an EC of 1.5 at this stage, that’s not far off.
Make sure to check your EC before you put anything in your water. Then add calmag up to 0.4, then add your nutrients to the EC you like.
I recommend you to work with EC now instead of ppm. EC is the best way to display the TDS of a nutrient solution because it is a universal unit. Unlike PPM which is EC x 0.5 or EC x 0.7. Since there are two different conversions of EC to PPM, PPM becomes an unreliable way to describe nutrient concentrations because you never know whether someone is using the same scale as you are.
PH looks good, EC looks ok, can be a bit higher imho, but that is not the problem here I think.
@cainofgroth, YES SIR! you did good buying the distilled water until you can work with R/O water.
Believe me when I tell you R/O water just makes SOOOO many problems disappear!!!
@happyhippy, I understand you were asking a question to clarify the situation!
Not criticizing at all, but just wanted to mention for anyone that’s reading to NEVER EVER use softened water on any plants !!! It’s full of (Na) Sodium and will kill plants faster than bitch piss!!!