This package includes Brightwell Aquatics Calcion 500 ml & Brightwell Aquatics Alkalin8.3 KH Buffer 500 ml. Together they are the foundation of a system formulated to provide the essentials for a reef aquarium. To the package we add two 50 ml (2 fl. oz.) measuring cups for accurately measuring your Reef Fusion. You can stop using the ones in the kitchen on the sly.

Brightwell Aquatics Calcion is a highly-concentrated ionic calcium solution. It increases the concentration of calcium in marine aquarium water to provide corals and other reef-building invertebrates with one of the most important elements required for growth. It's ionic rather than chelated, and contains no unwanted organic material such as EDTA, gluconate, or polygluconate. Over 50% stronger than most competing products. Free of phosphate, silicate, and organic material.

Basic Brightwell Aquatics Calcion Instructions: Shake product well before using. Add 5 ml (1 capful) of product per 50 US-gallons of aquarium water every other day or as needed to maintain the calcium concentration within a range of 412 - 450 ppm. When used in this fashion, 500 ml treats up to 5,000 US-gallons.

Brightwell Aquatics Alkalin8.3 KH Buffer, 500 ml is a highly-effective alkalinity(KH)-increasing (”buffer”) solution. It helps increase pH stability in an aquarium by raising the alkalinity. It provides a source of carbonates, which make up the majority by weight of aragonite, the mineral secreted by reef-building organismsas skeletal material. It's over 50% stronger than most competing products and is free of phosphate, silicate, and organic material.

Basic Alkalin8.3 KH Buffer Instructions: Shake product well before using. Add product at the maximum rate of 5 ml per 30 US-gallons daily until the desired alkalinity is attained, then dose daily or weekly as needed (see below) to maintain alkalinity between 7 - 12 dKH. When used in this fashion, 500 ml treats up to 3,000 US-gallons.