Monitoring brackish water and saltwater for harmful algal blooms has become more important than ever, and remote monitoring with the use of biosensors is the most effective way to track change over time. Our optically compensated, interchangeable fluorometers, including chlorophyll a and blue green algae, and our reliable five-port and seven-port multiparameter sondes make deployed monitoring effective and affordable. Designed to perform in high biofouling environments, our water quality instruments deliver actionable data with minimal maintenance.