My Diy Stirrer Plate (lots of videos) I dose alkalinity and calcium to my tank via a bubble magus dosing pump. However, despite the fact that it’s said that after mixing soda ash and calcium carbonate powder with distilled water into their respective container they are supposed to stay mixed, I have had quite the opposite experience. Although there isn’t sediment resting at the bottom of the containers, the liquid is more concentrated throughout different areas, making constant tank ...