If I add Lime (CaCO3) to an aquarium will the pH go up? If it does why? It has no Hydrogen ions surely? -- Stuart Halliday http://mytriops.com/ 200 Million years in the making... _______________________________________________ Aquatic-Plants mailing list Aquatic-Plants at actwin_com http://mailman.actwin.com/mailman/listinfo/aquatic-plants