So I started using reef crystals and noticed the kH is stupid high with new batches of salt water. Mixing around 10.3 dkH. So my question is, while I'm mixing the new salt water, could I just add PH Down to lower the kH? I dont care that the pH will return to normal, I'm more concerned about getting the overall kH down after the water is done gassing off the CO2. Since pH down is essentially just an acid anyway and acid lowers kH.