Biobizz PH down

Ec gives you idea of salt capacity of medium. Ph gives you general idea of mineral composition of that capacity. Base saturation refers to the percentage of a soil's CEC that is occupied by basic cations. Base saturation is positively related to soil pH. Generally, as pH increases (becomes more neutral or alkaline), base saturation also increase. At pH 7, which is considered neutral, the soil is considered to be fully base-saturated, meaning all the exchange sites are occupied by basic cations 100%. Basic cations are Ca, Mg, K and ammonium (NH4+) Nitrogen. Bit no more than 20% ammoniacal nitrogen should ever be in a medium at one time. Probably just far too much cations in that soil, Using hard water (high in mineral content, especially calcium and magnesium) will jist keep filling thay medium with excess salts. Aluminum sulfate is the fastest-acting soil amendment for lowering pH. Unlike elemental sulfur, which requires biological conversion and can take months, aluminum sulfate reacts quickly upon dissolving in the soil, lowering pH within days. However, it's important to note that while aluminum sulfate is fast-acting, it's also a strong acid and can be harsh on plants if overused.