CYA-NO is a specialized supplement designed to inhibit cyanobacteria growth in saltwater reef aquariums. It works by creating an environment that promotes the development of beneficial organisms which compete with cyanobacteria, thereby gradually shifting conditions away from those favorable for their growth. This product affects nitrogen (N), iron (I), phosphorus (P), potassium (K) and boron (B) levels while maintaining a balanced N:C:P ratio to ensure safety and effectiveness without the use of antibiotics or heavy metals.