SolarBee SB Mixers SolarBee SB Series Solar Circulators GridBee
GF Mixers GridBee GF Series Electric Circulators GridBee AP Air-
Powered Mixer GridBee AP Series Air-Powered Circulators  Estuary
view one  Estuaries are the tidally influenced environments
found in the transition zone between freshwater and the ocean,
and are among the most productive yet fragile aquatic ecosystems
on the planet. These are hydrologically complex systems, with
freshwater streams and rivers flowing into coastal embayments.
Because freshwater is less dense than saltwater, inflowing
freshwater often “floats” on top of the tidal saltwater wedge
beneath, creating a vertical density gradient. In a healthy
estuary, tidal flushing can keep bottom waters oxygenated
providing a great habitat for benthic organisms such as blue
crabs, oysters, and flatfish.  However, waters flowing into
estuaries are increasingly dominated by municipal wastewater
discharges and agricultural runoff. As these nutrient-rich
source waters become more quiescent in