Hello, I was just wondering how to raise Ca and Alk. My friend has a 12g cube and has been slacking on husbandry, and his Ca is at 360ppm and his Alk is 6 degrees Kh! No wonder his xenia is struggling...anyway, i was just wondering how I could help him raise his Ca and Alk evels with out using half a bottle of daily supplement. i have heard of using baking soda for raising alk but im not sure how much to use per gallon to raise it to 11 dKh. also what can i use to get the Ca to 400 ppm. these are the optimal levels correct()11dkh and 400ppm ca?) thanks for the help in advance.