I used sulfur for ph down and now it’s back up again. My tap water is 8.3 so I’ve been trying to ph the water too. Not sure why I can’t get it down. Thanks for the help
This might help:
“Soil bacteria converts the sulfur to sulfuric acid lowering the soil pH. It is important to note that this is a biological process (slow) and not a chemical reaction (rapid). The bacteria are active, when the soil is moist and warm. The soil temperature needs to be above 55F. In addition, the soil must not be saturated, or flooded (anaerobic) or the sulfur is converted to hydrogen sulfide (rotten egg smell) by anaerobic bacteria. Hydrogen sulfide kills plant roots. Irrigate to maintain soil moisture but do not over irrigate the soil. It is important to apply and incorporate sulfur at least a year before planting. Sulfur cannot be easily incorporated to the soil after plants are present. Surface-applied sulfur provides the same pH reduction as incorporated material, but takes longer. Check soil pH again before planting and apply additional sulfur if needed”.
So not sure if you meant that you put sulphur in the soil AND you are lowering the ph of the water separately but I think from reading this; sulphur is too slow in lowering your ph as it’s a biological process and not a chemical one?
This was quoted from Michigan university:
https://www.canr.msu.edu/uploads/files/Lowering_Soil_pH_with_Sulfur.pdf
