Ok so I did a bleach soak for 24hr then power washed the rocks an they turned out pretty white. Did a 1.5hr soak in muriatic acid and power washed it again. Rocks turned out dirtier than after I bleached it. I did notice some loss of rock mass. About 10% or less I would guess. I have it in a bin with ro water and a hang on back carbon filter. Would it turn white again after a few days ro soak?
|