I don't perma-soak my stones, so each time they are soaked and dried they are re-exposed to whatever is in the water.
I have extremely hard city water coming into my house at 22 grains of magnesium and calcium. After a carbon filter and water softener, the water at my sink is full of sodium (and I'm not about to switch to potassium). Then there's the water from my under-sink RO which might be pure enough to dissolve minerals in a stone.
Which water would do the least harm after repeated soaking and drying cycles? Does it even matter?
I have extremely hard city water coming into my house at 22 grains of magnesium and calcium. After a carbon filter and water softener, the water at my sink is full of sodium (and I'm not about to switch to potassium). Then there's the water from my under-sink RO which might be pure enough to dissolve minerals in a stone.
Which water would do the least harm after repeated soaking and drying cycles? Does it even matter?