My water ph was 7.3

[growerwithquestions]

I bought a water meter for PPM testing of nutrient feed waterings and run off as well as a ph check. My water is from a spring so I assumed it was pretty ideal for growing. According to the meter unfortunately, the ph was high at 7.3. I was under the impression it needs to be between 6 and 6.8. I read online to lower Ph add white vinegar or lemon juice. Are either of these legit and if so does anyone have a dose per gallon to start with. I dont want to bottom out the ph too much. Any advice or assistance would be appreciated. Happy growing.

[Silenttip]

What are you growing in? I’m growing in promix hp and I keep my ph between 5.8 to 6.1. I use ro water.

[Grow420]

Using a PPM and pH meter is a great step! The ideal pH for soil grows is 6.0–6.8, so your spring water’s pH of 7.3 will need adjustment. White vinegar and lemon juice can lower pH naturally but aren’t as stable as commercial pH-down products. Start with 1 teaspoon per gallon of water, mix well, and test pH. Adjust in small increments, allowing the water to stabilize for 15-30 minutes before watering. Check runoff pH to ensure it’s within range.

Spring water often has higher mineral content, so test PPM too. Base water PPM should be below 200 to avoid nutrient lockout. After adding nutrients, aim for 300-500 PPM in early veg, 600-900 in late veg, and 1000-1400 in flower.

For more stability, use a commercial pH-down product or buffer your soil with dolomite lime (1-2 tablespoons per gallon). If vinegar or lemon juice works for you, stick with it and monitor regularly. Let me know if you need more help—happy growing! 🌱

[Author]

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