Helps maintain a balanced nutrient-limited marine aquarium by enabling the hobbyist to enhance the rate of microbial growth and reproduction, increasing the rate of phosphate-reduction and denitrification; this is of particular benefit in heavily-stocked, well-fed reef aquaria, Replaces ""vodka method"" of microbial activity-enhancement with a completely safe and biologically-sound, non-flammable alternative to using vodka or ethanol, Indirectly benefits corals and other suspension-feeding invertebrates by encouraging reproduction of bacterioplankton (an important food source for suspension-feeding invertebrates), Encourages polyp-expansion in all corals, May be used to help expedite biological filtration in new set-ups, Formulated by a marine scientist, Liquid, 500-ml, SKU: RYLHC1032