Regarding PPM and TDS meters

Just verified my tap @ 15 ppm with a new meter. No RO or otherwise filtration/conditioning happening anywhere in the line.

Still scratching my head. But there you go.

For the record, I did see a runoff reading on a new soil mix that was around 2077. FFOF + castings+ kelp meal + perlite. So itā€™s not just reading low numbers.

That is about spot on for Ocean Forest. Think you can put your meter doubts aside

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Thanks a lot for the help!

Municipal water can be low. Mine is ~100ppm on .5 scale but that is because they add calcium carbonate to the water to boost pH and provide scale so pipes donā€™t rust. I donā€™t use purified water since municipal already has calcium and I just need to add some magsulfate instead of using calmag.

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@Jrmy_1 Thanks for the input. Iā€™ve since sorted it all out ( wellā€¦ Within reason! I still have plenty of questions) but I appreciate the additional info!

Welcome to the site! Itā€™s a pretty great resource.