I've been reading the articles on calcium and alkalinity and pH by Randy Holmes-Farley. Since I have low calcium and high alk, (320 ppm/3.2Meq/L) I should add Ca and NO CARBONATE, according to the Ca/alk article, but I also need to raise my pH, which is at 8.1. Since I'm not running a Ca reactor and I am running a skimmer, it makes it seem like I should add kalkwasser, which has carbonate. There is plenty of fresh air from my tree filled neighborhood wafting in from a nearby window. What should I do?