Tropic Marin Phos-Start is the first product to supply insoluble particulate phosphate minerals for starting marine aquariums. Tropic Marin Phos-Start also contains prebiotic biopolymers for bacterial nutrition, calcium, and trace elements. These components promote the diverse and active microbiology, in the cycling and new aquarium, that build the foundation of long-term reef aquarium success.Tropic Marin Phos-Start+ for use in the first 2 to 3 months during initial cycling phase and in the young aquarium+ Tropic Marin Phos-Start contains natural marine biopolymers as bacterial food to stimulate the microbiome in the startup phase of the new marine aquarium+ Calcium and trace elements stimulate and support the growth of coralline algae+ included halogen trace elements like iodide, fluoride and bromide, replace elements consumed by increased growth rate of coralline algae and corals+ recent studies show that the insoluble, particulate form of these components, are much more efficient f