Two Little Fishies C Balance 32 oz. two bottle packages. Each set contains two 32 oz bottles, for a total set volume of 64 oz. C Balance Two Part Balanced Ionic Supplement of Calcium and Buffer for Marine Aquariums This two part calcium and alkalinity maintenance system adjusts calcium, magnesium, and strontium ions to Natural Seawater ratios, and achieves a balanced ionic residual. Makes replenishment of calcium and alkalinity easy, and keeps your calcium and alkalinity in perfect harmony, assuring the optimum conditions for growing stony corals and coralline algae. Rapidly raises calcium and alkalinity without disturbing ionic balance of seawater. Easy to use no dosing system required. Replenishes salts lost to protein skimming. Promotes vigorous growth in coralline algae and stony corals. Packaged in two 500 ml (16 oz) bottles and two 946 ml (32 oz) bottles or as a concentrate in two 3785ml (1 gal.) bottles. About Two Little Fishies, Two Little Fishies, Inc. was founded in 1991 to promote the reef aquarium hobby with its introductory video and books about reef aquariums. The company now publishes and distributes the most popular reef aquarium reference books and identification guides in English, German French and Italian, under the d.b.a. Ricordea Publishing. Since its small beginning, Two Little Fishies has also grown to become a manufacturer and importer of the highest quality products for aquariums and water gardens, with international distribution in the pet, aquaculture, and water garden industries. Two Little Fishiesï¿½ product line includes trace element supplements, calcium supplements and buffers, phosphate-free activated carbon, granular iron-based phosphate adsorption media, underwater bonding compounds, and specialty foods for fish and invertebrates. Two Little Fishies also offers beautifully engineered plastic fittings used for air and water plumbing in aquariums, water gardens and paludariums. It is our company mission to manufacture and distribute products of the finest quality that are simple, elegant, practical, and useful. By providing these intelligent solutions and publishing the latest information about how to build successful and beautiful aquariums, we enhance everyoneï¿½s enjoyment of their aquatic hobby. This way we build a following of happy successful customers.