Hello all! For about 5 days now, I mount an Co2 scrubber to an air stone. Today I found that Ca is 510 and 3 days ago was 410. Is it possible that this spike to be linked with the Co2 scrubber? Alk down from 9.3 to 9 in 3 days. Saddly PH I don't measure. Corals were not happy this morning. I'm not dosing anything.