I had to raise my alk more than normal using BRS liquid sodium bicarbonate and I also added Seachem Clarity during my normal water change. I think the combination is causing my skimmer to go overboard. Or does adding more than normal sodium bicarbonate cause this? I tried putting in a piece of Poly Filter (by Poly Bio Marine Inc.) but it hasn't alleviated all the bubbles. Other than a water change does anyone have any other ideas?