Thanks. I'll check it out.
I dont think id ever deliberately add aluminum to my media or soil in any form. Al doesnt concern you?
I notice that weekly use of sufuric acid stabilized fish hydrolysate through veg tends to drop my soil from ~7pH to about 6.5. But ya thats hitting it weekly
That careies a complex answer it can work and it may not work depending on the buffering capacity of the soil makeuo to begin with.
Iron also lower PH thats another option.
The cocern though lays with the nutrient ratios, concentration and its interaction with the soil makeup. The reason this is a slippery slipe is because you solving the oroblem with a risk factor… in this case your resukts cone from increased microbe respiration because of population increase from food and also decay both of which produce co2. Co2 then becomes dissolved in water forming carbonic acid. At a dkh os about 4 around 30ppm od dissolved co2 will produce a ph drop of about 1.0
And the fact that the organics break down produces ammonia/ammonium and when plants take that up they release h+ ions in the process which also lowers soil Ph. Thats right plants can and do actually change soil ph as well as the microbes.
But again that route carries the risk of creating nutrient tox, imbalance in ratios and others.
But also that doesn’t mean it can work. If it works for you then thats all that matters but it doesn’t mean it will work in all scenarios without causing other issues