Manhattan Reefs
Real Reefer
Brooklyn, NY
In the midst of the pre-swap, frag ogling frenzy, it often gets over-looked that the Swap is an opportunity to do much more than trade and buy corals. We make every effort to make your experience an educational one by presenting demos or workshops throughout the day. We also bring in world class speakers to help you hone your reef keeping skills. This year is no exception.

Our good friend and hobby mainstay Dr. Sanjay Joshi reprises his popular MACNA 2019 talk:

Reef Keeping by Numbers - Reef aquarists are constantly dealing with numbers. Water parameters such as temperature, pH, Salinity, chemical test numbers, etc. These numbers are obtained by measurement and testing. Digital and automated test equipment is becoming prevalent. High resolution testing such as ICP has become staple in modern Reef keeping. However there seems to be a limited understanding of accuracy, precision and variability of the resulting numbers, the interpretation of these numbers and impact of this on reef aquariums. This talk will address these issues.


Dr. Sanjay Joshi in real life is a Professor of Industrial and Manufacturing Engineering at Penn State University. He has been a reef addict since 1992, and currently keeps several reefs aquariums at home including a 500G SPS dominated reef. He also co-manages the 500G aquarium at Penn State.

Dr. Joshi is actively involved in educating the hobby on various topics such as lighting, aquarium system design and general reef husbandry through his publications in reef magazines and lectures. He has published articles in magazines such as Advanced Aquarist, Reefs Magazine, Coral, Marine Fish and Reef Annual, Aquarium Frontiers, and Aquarium Fish and is a recipient of MASNA's Aquarist of the Year award

Robert Stark best know for his innovative aquarium supplement company ESV is also a tireless thinker always striving to find ways to unlock the findings in the scientific literature and applying them in practical and meaningful ways for hobbyists. His talk The Simplicity Beyond Complexity attempts to extrapolate research from marine science journals into the design of simplified closed marine ecosystem models that provide a simple, economical methodology to help beginning reef aquarists entering the hobby.


Born in Queens, New York, Bob Stark has been a marine aquarist for 50 years. He graduated from the Southampton campus of Long Island University in 1979 with a Bachelor of Science degree in Marine Biology. For the next 27 years he worked as a chemical engineer at his family's chemical specialty company, ESV Company Inc. During this time he privately maintained marine aquaria and was caught up in the revolutionary wave of reef aquariums when it hit the United States in the mid 1980's. In 1995 he formulated and started to sell B-Ionic Calcium Buffer, the first easy to use, ionically balanced two part calcium and alkalinity additive. Soon after he formulated B-Ionic Magnesium, the first ionically balanced magnesium additive. In 1996 he was a speaker at MACNA XI in Louisville, Kentucky and has presented his ideas and philosophies to several aquarium clubs over the years. In 2003 his simplistic approach to reef keeping was featured in Mike Paletta's book "Ultimate Marine Aquariums: Saltwater Dream Systems and how they are Created" as the "Bare Bones Reef". In 2006 Bob and his brother Rich ended the chemical specialties company and formed ESV Aquarium Products Inc. to exclusively manufacture and sell products for the aquarium industry. Soon after the formation of the new company, he formulated the 4 component B-Ionic Seawater System to address the problems of impurities and inconsistencies in single component, dry synthetic seawater mixes.
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