Welcome to the Pacific Aquaculture & Coastal Resource Center (PACRC)

The Pacific Aquaculture & Coastal Resources Center's mission is to advance long-term sustainable use and conservation of coastal areas worldwide through aquaculture and resource management. The Center promotes excellence and innovation in interdisciplinary scientific research, public policy initiatives, outreach activities, and education. The PACRC is a project of the University of Hawaiʻi at Hilo in cooperation with the County of Hawaiʻi, the Keaukaha Community Association, and the UH Sea Grant College Program.

Upcoming Events

Lecture Series: Topics for understanding and designing aquatic holding systems

Tuesdays 4:30 - 6pm, 28 May - 30 July, 2019 at PACRC (Classroom trailer next to main office)

Please contact rmasse@hawaii.edu for questions.

This is a free summer lecture series for anyone who is interested in learning how to design, build and maintain aquatic holding systems. If you are working at or want to work in aquaculture, at a zoo, aquarium, or an aquatic research facility, this course will give you the practical information you need to know. Check out the list of topics for each week below.


Week Topic
28-May pH - Understanding pH, what impacts changes in pH and how to control pH in aquaculture and aquatic holding systems. Special topics include acclimation and shipping of aquatic organisms.
4-June Nitrogen - A discussion of Ammonia (TAN), Nitirte, and Nitrate inaquatic systems. Ammonification, dentirifcation, Ammonia/Ammonium, feeds, and biological filtration.
11-June Moving Water Part 1 (Pumps) - A breakdown of the ways to move water using traditional and non traditional pumps, pump parts, and how to read a motor plate.
18-June Moving Water Part 2 (Pump Selection) - Understanding pump curves, selecting an appropriate pump for the application and calculating head height.
24-June Aeration Part 1 (Aeration Basics) - Understanding the basics of aeration, Oxygen requirements, Oxygen transfer and how to measure Oxygen.
16-July Aeration Part 2 (Aeration vs. Oxygenation) - A discussion of aeration and oxygenation equipment including diffusers and compressors, and calculation friction loss and pressure.
23-July Filtration Systems Part 1 (Systems) - A description of the various types of filtration systems, design considerations, different types of holding tanks, and methods of filtration.
30-July Filtration Systems Part 2 (Equipment) - Types of filters: mechanical, chemical, biological, UV sterilization, ozone, foam fractionation, heating/chilling, and oxygenation systems.