Microbe-Lift Corraline Algae Accelerator - a single bottle, multipart approach to stimulating the growth of Coralline algae without promoting nuisance algae growth. Microbe-Lift Corraline Algae Accelerator contains fine powdered aragonite, liquid calcium, strontium, magnesium and iodide.Microbe-Lift Corraline Algae Accelerator Contains:+ fine powdered aragonite+ over 100,000 mg/L calcium+ added magnesium & iodideRed to purple algae that forms on live rock is encouraged by many reef hobbyists. It is very colorful and competes with nuisance algae. Dosage: add daily 2 ml to 100 litres of aquarium water until the desired calcium content is reached.