Are you tired of guessing what your reef aquarium chemistry is going to be once you add that pickling lime or baking soda to your tank? Well with the new and improved Reef Chemistry Calculator you can calculate your chemistry even while using the most impure farm yard bought chemicals. Although Jose Dieck’s RCCÂ has been around for some time, the free web-based service has seen a recent update with more additives to pick from, new background colors and most importantly, a script based functionality which is optimized for mobile browsing. Unlike the popular iPhone app from Seachem called Dose, this calculator will accept volume in US gallons and Liters and it is not restricted to Seachem products. The RCC can calculate Calcium, Alkalinity and Magnesium and it does so for free and without any annoying ads.