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Advanced Tidal Systems
PO Box 129
Aptos, CA 95003
US: 831-239-9740
INTL: +011-​831-239-9740

ATS invents the COSA™

In 1995, David Fregger along with hardware and software engineer Jeff Hewitt, invented the world's first computer operated surge aquarium or COSA system. Jeff created the software along with the hardware that allows the aquarist to program and control water levels (tides), waterfalls, surge activity and lighting from the computer. The COSA system not only simulates the rhythm of a natural reef habitat, it also replicates the plant and animal exchange; the basic building blocks of our world's ecosystems.

In addition to the COSA system, David Fregger designs and builds various types of living reef aquarium systems that are unique to his craftsmanship and artistry. From four and a half gallon Mini Reef aquariums, twelve gallon controllable tidal Mini Surge aquariums, to larger systems, Fregger remains one of the industries most creative minds.

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