Hi. I mainly grow carnivorous plants and that reading is critical in regards to the plants' well being.

Does it matter for non carnivorous plants?

Thank you

Im about to water(with fertilize) and was curious about the ppm in the fertilized water, wether it matters or not.

No. I fertilize all kinds of plants with tap water and well water. Never have paid any attention to TDS.

It matters for some plants (like orchids) but, you can compensate with your fertilizer regimen.

Unless you are a commercial grower or your tap water is unusually high in mineral salts, then TDS and PPM should not matter.

Is your concern for potted plants or plants grown outside in the ground?

How are you measuring PPM?

WillC said:Unless you are a commercial grower or your tap water is unusually high in mineral salts, then TDS and PPM should not matter.

Is your concern for potted plants or plants grown outside in the ground?

How are you measuring PPM?

Potted particularily.

Ppm meter

Brenden - If you are a hobbyist and growing potted plants, I think you are unnecessarily concerned about the mineral content of the soil. Fertilizer is vastly overrated and overused. For most potted plants, a standard potting mix, and occasional fertilizing with a complete fertilizer is fine. Trying to fine tune beyond that is unlikely to make any difference.