Anything that is small enough for plant roots to absorb and is an ionic compound and can be considered a mineral salt electrolyte. During aerobic decomposition of organic matter, numerous chemical reactions occur that release heat. Organic matter is being decayed into mineral salt electrolytes at X rate, you most certainly could leech the medium until EC reaches a level, the rate of release would determine how quickly the problem would reappear.
This might be a risky attempt at peril, but you could also try adding uncharged biochar, biochar acts as a cation sink in soils. It does this by increasing the soil's cation exchange capacity (CEC), which is the ability of the soil to hold positively charged ions like calcium, magnesium, potassium, and ammonium. Biochar achieves this through its porous structure and high surface area, providing numerous binding sites for these cations. Adding horticultural charcoal to soil generally lowers several soil reactions related to nutrient availability and soil chemistry. Specifically, it can reduce the release of nitrous oxide and methane, and it can decrease the concentration of soluble phenols in soil solution. Additionally, charcoal can decrease nitrate availability and may hinder the mineralization of nitrogen under certain conditions.
They are all different, although they look identical, they are very different, be careful not to confuse. God luck!