Soil PH of 7.0 too high? How to lower soil PH with dry amendments?

Kirsten
Kirstenstarted grow question 2y ago
Ok guys, I assume all of us know at least a little about water PH. I need some expert advice. My soil PH is 7.0. I PH my water between 6.0 and 6.5. Which is important? The PH of the Soil, or water? If i need to lower my soil PH, how do i do it? Any dry ammendments that I can add?
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Week 10
Setup. Substrates
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TheCalyxLaboratory
TheCalyxLaboratoryanswered grow question 4mo ago
Both matter, but the root zone pH is what the plant actually feels. 7.0 is a bit high for soil (aim for 6.2–6.5) because it can start locking out micronutrients and phosphorus. How to fix it: • Don't overthink dry amendments: Adding things like elemental sulfur takes weeks to work. It’s too slow if you're already in week 10. • The "Water-In" Method: Keep PH-ing your water to 6.0. The soil has a "buffer," so it takes a few waterings to pull that 7.0 down. • Check your Runoff: Next time you water, measure what comes out at the bottom. If it's still 7.0+, go down to 5.8 pH for one watering to nudge it. Your plant looks pretty decent, so don't panic-adjust too hard! Just keep the inflow slightly lower (6.0) and the soil will eventually follow.
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