Aquaforest Component 1+, 2+ and 3+ Aquarium Treatments Bottles (3 Pack), 5L Formula of chemical composition of components 1+, 2+, 3+ is based on method developed by H. Balling Maintaining adequate level of magnesium and calcium allows preserving suitable amounts of microelements in a reef aquarium It has been modified and enriched with microelements necessary for normal function of a marine aquarium