Sanjay Joshi, Ph. D.

Growing up in Bombay (now Mumbai), India, Sanjay started keeping tropical fish as a teenager (seems like eons ago!) and has maintained that interest ever since. Keeping marine fish was always his dream growing up, which he finally realized in 1992 when he first saw a coral reef aquarium and was fascinated by its corals. He has been a reef aquarium addict since then, and currently keeps three reefs at home: a 55-gallon, a 60-gallon and a 180-gallon small-polyped schleractinian-dominated reef. He also co-manages the 500-gallon aquarium at Penn State, which has provided the beauty of reefs to thousands of college students and school children.

Sanjay is an avid DIYer and enjoys tinkering with and designing equipment for his reef aquariums. His quest for knowledge and striving for data led him to test metal halide lamps, and over the years this has continued and has resulted in the collection of a large amount of data on metal halide lighting and reflector systems. These data are now available online at:

He has published several articles in magazines such as Marine Fish and Reef Annual, Aquarium Frontiers, Aquarium Fish and Advanced Aquarist. In addition, he has been an invited speaker at several national marine aquarium society meetings and local clubs.

Sanjay in "real" life is a professor of Industrial and Manufacturing Engineering at Penn State University, where he has taught since 1987.

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