Joe and Dr. Jeff discuss all things related to Zoo and Aquarium Aquatic Animal Life Support Systems. Everything from water treatment equipment and design to operations and construction. We talk to operators, engineers, architects, curators, and anyone and everyone who works on keeping our zoo and aquarium water clean, our animals healthy, our exhibits natural and our systems sustainable.
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Ep 51 - Caring for Corals: Charles Delbeek on Coral Husbandry
Saison 1 · Épisode 51
vendredi 25 septembre 2026 • Durée 01:01:13
What does it actually take to keep a 212,000-gallon live coral reef thriving for decades? On this episode of Inflow, Charles Delbeek, coral expert at Steinhart Aquarium (California Academy of Sciences) and co-author of The Reef Aquarium book series, joins the show to walk through nearly 30 years in coral husbandry, from hobbyist reef tanks in Toronto to professional exhibit design at Waikiki Aquarium and Steinhart.
Charles breaks down coral husbandry as a balance of science and art: exhibit design fundamentals like surface-area-to-volume ratio and hiding life support equipment from public view, protein fractionation and surface skimming, ozone dosing and ORP/color-based control, and the structural realities of building coral systems that last: concrete quality, rebar corrosion, cathodic protection, and sacrificial anode choice. He shares a cautionary tale about a value-engineered ozone manifold that nearly over-dosed an entire system, walks through alkalinity and calcium maintenance approaches on both sides of the Atlantic, and explains why water motion and lighting are just as much life-support components as filtration. Charles also corrects a common myth about coral growth rates, recounts a striking observation from the 1997-98 global bleaching event in Palau, and closes with a candid look at the knowledge-transfer gap facing the aquarium industry as veteran staff retire.
This episode is brought to you by MDM Pumps and Longhorn Organics. Thank you for supporting Inflow and the LSS community!
Inflow is the podcast where we discuss all things related to aquatic animal life support. Subscribe, leave a review, and find more episodes, show notes, and sponsor info at https://inflowlsspodcast.com/.
(2:28) Guest Introduction: Charles Delbeek of Steinhart Aquarium
(3:09) Charles's Background: Toronto Hobbyist, Scuba and Photography in the Keys
(3:53) Reef-Tank Pioneering with the Toronto Aquarium Society and Writing The Reef Aquarium
(5:58) Master's in Zoology and Starting a Career at Waikiki Aquarium (1995)
(7:08) Science vs. Art in Coral Husbandry
(10:35) Exhibit Design Fundamentals: Surface Area to Volume, Hiding Equipment, Spacing Corals
(13:52) Surface Skimming and Protein Fractionation
(17:13) Moving to Steinhart Aquarium and the 212,000-Gallon Live Coral Tank
(18:18) Ozone Use and ORP/Color-Based Control
(18:44) The Value-Engineering Ozone Manifold Story
(23:49) Industry Staffing and the Knowledge-Transfer Gap
(30:00) Structural and Construction Concerns: Concrete, Rebar, Corrosion, Anodes
(34:47) Alkalinity and Calcium Maintenance: Reactors vs. Dosing, Kalkwasser
(38:35) Water Motion: Diffusion Boundary Layer, DC Pumps, Closed Loops
(40:11) The 1997-98 Bleaching Event: An Observation from Palau
(45:22) Lighting as a Life-Support Component
(50:23) Source Water Treatment and Nitrate/Phosphate Management
(56:05) Closing Advice and Key Takeaways
(59:31) Corals Are Not Slow-Growing: The Pruning Misconception
Ep 50 - Denitrification, Ozone, and Over 60 Combined Years in LSS: The Hosts Trade Seats
Saison 1 · Épisode 50
mercredi 9 septembre 2026 • Durée 59:08
To celebrate 50 episodes, Inflow flips the format: instead of interviewing a guest, hosts Joe Arlotto and Dr. Jeff sit down to interview each other. Between them they bring over 60 combined years of aquatic animal life support systems experience — Joe's path runs through Brookfield Zoo, Albuquerque Aquarium, San Diego Zoo, and SeaWorld Abu Dhabi, while Dr. Jeff's began in October 1989 at Walt Disney World's The Living Seas before moving through Walt Disney Imagineering and independent LSS consulting.
This milestone conversation traces how a casual chat on a bus to a zoo conference turned into a podcast documenting the history of the LSS field, and digs into the technical topics that have defined both hosts' careers: denitrification (batch vs. continuous flow, carbon sources, and digester design), wetland and salt marsh filtration, the early days of ozone and ORP chemistry in seawater systems, and the shift from operating life support systems to designing them — including how CFD modeling shapes sump and skimmer placement today. Along the way, Joe and Dr. Jeff share the career stories behind the science: a midnight resume drop at Brookfield Zoo, a round-the-world trip after the Navy, a PhD finished on a Thursday and a start date at Disney the following Monday, and a 30-year full-circle trip through the Persian Gulf.
Whether you're an LSS operator, designer, or aquatic life support enthusiast, this episode is a rare, candid look at how two very different paths led to the same field — and what both hosts have learned about designing, building, and operating the systems that keep aquatic life thriving.
This episode is brought to you by Aquatic Equipment and Design, Cloward H2O, and Longhorn Organics — thank you for supporting Inflow and the LSS community.
Inflow is the podcast where we discuss all things related to aquatic animal life support. Subscribe, leave a review, and find more episodes, show notes, and sponsor info at https://inflowlsspodcast.com/.
Chapters
(0:51) Episode 50 Milestone
(1:36) Origins of the Inflow Podcast: The Bus Ride at the AALSO Conference
Ep 49 - Zoo vs. Aquarium: What 27 Years in Life Support Taught Matt Regensburger
Saison 1 · Épisode 49
mercredi 19 août 2026 • Durée 45:08
What does 27 years of aquatic life support experience actually teach you about designing, building, and operating exhibits that work? On this episode of Inflow, hosts Joe Arlotto and Dr. Jeff Keaffaber sit down with Matt Regensburger of Tenji Aquarium Design to trace his path from life support operator at the St. Louis Zoo, to a high-intensity, 24-hour operation at Georgia Aquarium, to helping open St. Louis Aquarium right before COVID hit — and finally into design-build work with Tenji.
Matt breaks down the real differences between zoo-based and aquarium-based life support systems, from control platforms and floor layouts to the culture shock of moving from a 90-acre zoo campus to a high-speed, multi-floor aquarium. He and the hosts dig into what it means to be involved in a project from concept through design, construction, and startup — and why that full-circle experience changes how you troubleshoot. The conversation also covers Tenji's design-build approach, how the team uses Revit for clash detection, working with performance specs, coral and reef system design (calcium reactors vs. automated dosing), and how Tenji partners with owners who range from expert aquarium curators to first-time operators at restaurants and science centers. Matt closes with his advice for anyone starting out in life support: be curious, ask questions, and watch out once you've got a year of experience under your belt.
Whether you're an LSS operator, an aquarium design professional, or just curious about what it takes to keep a 7,500-gallon reef tank running, this episode offers a rare look at the full lifecycle of an aquatic life support project.
Guest: Matt Regensburger, Construction Project Manager, Tenji Aquarium Design
Inflow is the podcast where we discuss all things related to aquatic animal life support. This episode is sponsored by Ardura and Matt LSS. Subscribe, leave a review, and find more episodes, show notes, and sponsor info at https://inflowlsspodcast.com/.
Chapters
(3:40) Guest Introduction: Matt Regensburger of Tenji Aquarium Design
(4:28) Matt's Background: St. Louis Roots and Becoming an Aquarist
Ep 48 - Inside the Aquarium of the Boardwalk: Life Support Lessons with Alex Hunter
Saison 1 · Épisode 48
lundi 27 juillet 2026 • Durée 49:54
Inside the Aquarium of the Boardwalk: Life Support Lessons with Alex Hunter
What does it take to build and operate the life support systems for one of America's newest public aquariums? In this episode of INFLOW, hosts Joe Arlotto and Dr. Jeff Keaffaber are joined by Alex Hunter, Director of Life Support at the Aquarium of the Boardwalk, for an in-depth conversation about launching a modern aquarium from the ground up. Alex shares his career journey, the challenges of commissioning a brand-new life support system, and the lessons learned from balancing innovative design with the day-to-day realities of aquarium operations.
The discussion explores aquarium filtration, water quality management, life support engineering, startup commissioning, equipment selection, troubleshooting, and the importance of collaboration between designers, contractors, and operators. Whether you're an aquarium professional, life support system engineer, aquatic animal specialist, or simply fascinated by the science behind world-class aquariums, this episode offers practical insights into creating stable, healthy environments for aquatic life and the people who care for it.
In this episode, you'll learn about:
Launching the Aquarium of the Boardwalk
Life support system (LSS) design and commissioning
Aquarium filtration and water quality management
Startup challenges and operational lessons
Collaboration between engineers and aquarium operators
Best practices for maintaining healthy aquatic habitats
Career advice for aspiring LSS professionals
(3:14) - Meet Alex Hunter (6:55) - Moving Up by Moving On (10:18) - Mirage to Mandalay Bay (11:41) - Mammal vs Fish Systems (13:23) - Startup Staffing Realities (16:14) - Turnover and Training Legacy (19:07) - Aquarium of the Boardwalk Systems (21:59) - Power Failures and Backup Generator (26:28) - Filtration System Layout (27:38) - Drum Filters Deep Dive 3 (32:34) - Sand Filters Backwash (36:36) - CapEx and Risk Mitigation (40:18) - Isolation Valve Project (42:35) - AALSO Community Impact (46:03) - Certification Career Ladder (47:35) - Advice for New Operators
Thanks to Our Sponsors
Ep 47 - How MAT LSS Is Rethinking Aquarium Filtration and Life Support
Saison 1 · Épisode 47
lundi 13 juillet 2026 • Durée 56:44
What does it take to design life support systems for some of the world's most ambitious aquariums? In this episode of INFLOW, hosts Joe Arlotto and Dr. Jeff Keaffaber sit down with Nurettin Ersu, founder of MAT LSS, to explore the engineering philosophies, innovative filtration technologies, and practical lessons that are shaping the next generation of aquatic life support systems.
Drawing from decades of experience designing and commissioning aquarium projects around the world, Nurretin discusses the evolution of aquarium filtration, advances in life support system (LSS) design, balancing water quality with operational efficiency, and the importance of creating systems that are both reliable and sustainable. The conversation also dives into engineering challenges, international collaboration, emerging technologies, and what today's designers and operators should consider when planning future aquatic facilities.
Whether you're an aquarium professional, life support operator, engineer, aquatic veterinarian, consultant, or student entering the field, this episode offers valuable insights into the science and engineering behind healthy aquatic environments.
In this episode, you'll learn about:
Modern aquarium life support system (LSS) design
Aquarium filtration innovations and engineering principles
Water quality management and biological filtration
Designing reliable, efficient aquatic systems
Lessons learned from international aquarium projects
The future of aquarium engineering and aquatic animal life support
(3:30) - Meet Nurettin and MAT Growth (17:07) - Skid Systems and Client Support (29:06) - Supply Chain Lead Times (32:05) - Seaworld Mega Project Lessons (40:12) - Training Operations And US Market
Subscribe to INFLOW for conversations with the leading experts in aquarium engineering, aquatic animal care, water treatment, and life support systems. New episodes feature industry leaders sharing practical knowledge, technical expertise, and real-world solutions for public aquariums, zoos, research facilities, and aquatic professionals worldwide.
Ep 46 - A Career Built Around Water: Dane Tullock on Aquariums, Aquaculture, and Life Support Systems
Saison 1 · Épisode 46
jeudi 25 juin 2026 • Durée 01:03:41
What does it take to build a career that spans aquaculture, exhibit construction, life support systems, and executive leadership? In this episode of INFLOW, hosts Joe and Dr. Jeff sit down with Dane Tullock to explore a career shaped by curiosity, collaboration, and a passion for advancing the aquarium industry.
Dane shares how his journey from aquarist to aquarium executive gave him a unique perspective on life support systems (LSS), facility design, and the critical role aquarists play in successful projects. The conversation explores why owner involvement is essential during aquarium planning and construction, how husbandry and engineering teams can work together more effectively, and the lessons learned from decades of designing, building, and operating aquatic facilities.
Whether you're an aquarist, LSS operator, engineer, designer, or aquarium leader, this episode offers valuable insights into career development, interdisciplinary collaboration, and the future of public aquarium operations.
In this episode:
Dane Tullock's career path from aquarist to executive leadership
Why aquarists should have a seat at the design table
Best practices for aquarium and life support system (LSS) design
Bridging the gap between husbandry, engineering, and operations
Lessons from aquaculture, exhibit construction, and public aquariums
Advice for the next generation of aquarium professionals
(2:58) - Meet Dane (10:33) - Grad School and Aquaculture (13:14) - Virginia Aquarium Expansion (17:41) - Ripley's Myrtle Beach Build (27:03) - Sixth Sense and System Balance (30:43) - Next Stop Gatlinburg (35:34) - Leaving Ripley's Path (38:48) - Burnout and REI Shift (41:12) - Back to Ripley's Toronto (44:14) - Transfer and Florida Return (50:19) - Planning and Overtime Lessons (55:01) - Renovations and Conservation Focus (58:42) - Career Advice and Wrap-Up
Ep 45 - Building an LSS Computer Model
Saison 1 · Épisode 45
lundi 8 juin 2026 • Durée 52:32
What if you could predict water quality problems before they happen?
In this episode of INFLOW, hosts Joe Arlotto and Dr. Jeff Keaffaber sit down with Paul Cooley, Aquatics Director at PC Aquatics and Senior Engineer with Ardurra, along with Chris Carr, Director of Life Support Systems at Long Beach Aquarium of the Pacific, to explore a groundbreaking new tool for the aquatic animal life support industry: a comprehensive Life Support System (LSS) computer model.
Drawing on real-world data from Long Beach Aquarium of the Pacific, Paul and Chris discuss how advanced modeling is being used to simulate and predict critical water quality parameters, including dissolved oxygen, ammonia, nitrite, nitrate, pH, alkalinity, carbon dioxide, phosphorus, temperature, and more. The conversation explores how digital modeling can help operators troubleshoot system performance, optimize filtration processes, improve emergency preparedness, and even influence the design of future aquariums and aquatic facilities.
The group also examines how data-driven decision-making, predictive analytics, and emerging AI technologies could transform aquatic animal life support operations by helping facilities conserve water, save energy, improve sustainability, and provide healthier environments for animals.
Whether you're an LSS operator, aquarium engineer, aquatics professional, zoo professional, consultant, or student entering the field, this episode offers a fascinating look at the future of aquarium water quality management and the next generation of life support system design.
Topics covered include:
Life support system (LSS) computer modeling
Aquarium water quality prediction
Dissolved oxygen (DO) management
Nitrogen, carbon, and phosphorus cycles
Aquarium design and engineering
Life support troubleshooting
Sea otter habitat water quality
Predictive analytics for aquariums
AI applications in aquatic animal life support
Sustainable aquarium operations
Ep 44 - Inside AALSO 26 Part 1: Lessons from Chris Carr & Sean Bourgeois
Saison 1 · Épisode 44
jeudi 28 mai 2026 • Durée 55:03
In Part 1 of this special AALSO 26 series, the INFLOW podcast welcomes Chris Carr and Sean Bourgeois for an in-depth conversation on the evolving world of aquarium life support systems, aquatic engineering, and large-scale facility operations. From system design and project execution to troubleshooting complex aquatic environments, Chris and Sean share real-world insights from the front lines of the aquarium industry.
Hosts Joe Arlotto and Dr. Jeff Keaffaber explore the challenges of balancing engineering, water quality, animal care, and operational efficiency in modern aquariums and aquatic facilities. This episode dives into practical lessons learned from major projects, the importance of collaboration between operators and designers, and the future of life support innovation.
Whether you work in aquarium operations, aquatic engineering, water treatment, zoological facilities, or life support system design, this episode delivers valuable perspectives from two respected voices in the industry.
Topics include: • Aquarium life support systems (LSS) • Aquatic engineering and system design • Water quality management • Aquarium operations and maintenance • AALSO 26 insights and industry trends • Large-scale aquatic facility projects • Collaboration between designers and operators • Lessons learned from the field
(0:31) AALSO 26 Highlights (7:29) - Origins of AALSO (12:12) - Chris Carr Career Path (16:22) - Long Beach Aquarium of the Pacific Overview (20:32) - Saltwater Loop and Staffing (23:46) - Life Support and Water Quality (25:12) Sponsor Break: MDM Pumps (30:47) - Sean Career Path (34:10) - Big Tanks Expansion (40:32) - Saltwater Intake Process (43:00) - Salinity And ORP Talk (44:35) - Drum Filters And Day Tanks (50:06) - Biggest Operational Challenges (52:41) - Conference Takeaways
Subscribe to INFLOW for conversations with leading experts in aquarium engineering, aquatic animal care, and life support technology.
Ep 43 - Clear Views, Complex Systems: The Role of Acrylic in Modern Aquariums
Saison 1 · Épisode 43
vendredi 8 mai 2026 • Durée 51:52
In this episode of the INFLOW podcast, hosts Joe Arlotto and Dr. Jeff Keaffaber sit down with Zack Behrendt of American Sealants, Inc. for an in-depth conversation about the critical role acrylic plays in modern aquarium design, aquatic animal life support systems, and large-scale habitat construction.
From massive viewing panels and underwater tunnels to structural bonding, waterproofing, and long-term maintenance, Zack shares expert insight into the engineering challenges behind public aquariums, zoos, marine mammal habitats, and aquatic exhibits. The discussion explores how acrylic technology has evolved, why proper sealing and installation are essential for animal safety and water quality, and how operators and designers can avoid costly failures in aquarium infrastructure.
Whether you work in aquarium life support systems (LSS), aquatic engineering, exhibit fabrication, public aquarium operations, or marine construction, this episode delivers valuable knowledge on acrylic systems, aquarium maintenance, exhibit longevity, and the intersection of engineering and animal care.
Topics include:
Aquarium acrylic panel installation
Sealants and waterproofing systems
Public aquarium construction
Life support system design
Structural engineering for aquatic exhibits
Acrylic maintenance and repair
Marine habitat infrastructure
Water containment solutions
Aquarium operations and design collaboration
Challenges in large-scale aquatic facilities
(2:50) - Meet Zack (5:27) - ASI Services Overview (9:07) - Design Coordination and Engineering (11:11) - Glass vs Acrylic Tradeoffs (14:21) - Sealing and Support Details (16:24) - Catastrophic Failures and Inspections (22:13) - Common Leaks and Dye Testing (27:33) - Underwater Seal Repair Methods (30:19) - Polishing and Scratch Tiers (34:16) - UV Aging and Refill Rate Rules (43:25) - Robots and Cleaning Tech (45:55) - Chemical Do and Dont List (48:00) - Career Advice and Wrap Up
Ep 42 - Keeping the Flow: Tori Sipos on the Critical Importance of LSS Reliability
Saison 1 · Épisode 42
jeudi 16 avril 2026 • Durée 43:38
In this episode of Inflow, hosts Joe Arlotto and Dr. Jeff Keaffaber welcome Tori Sipos, the Facilities & Maintenance Manager at Riverbanks Zoo and Garden. Tori shares her journey through the industry, moving from hands-on technician roles at the Georgia Aquarium to leading the broader facilities team at a premier zoo and garden.
We explore the transition from "turning wrenches" on life support systems to managing the high-level logistics of an entire facility's infrastructure. Tori provides a unique look at the day-to-day responsibilities of a manager, from budgeting and administrative planning to ensuring the mechanical integrity of systems that support both animals and guests.
Key topics discussed in this episode:
The Path to Management: Tori's progression from an entry-level technician at the Georgia Aquarium to a leadership role at Riverbanks Zoo and Garden.
Life at the Zoo: The unique challenges of overseeing facilities and maintenance in a zoo environment and the importance of a dedicated, specialized team.
The Evolution of the Role: Shifting focus from daily LSS maintenance to long-term project planning, facility coordination, and departmental leadership.
Building a Team Culture: The importance of mentorship, open communication, and fostering a "team-first" mentality in a high-stakes environment.
Advice for Aspiring Operators: Why "putting in the work" and being a reliable team player are the best ways to advance in the aquatic life support and facilities world.
Whether you are a technician looking to move into management or simply fascinated by the infrastructure required to run a world-class zoo and aquarium, Tori Sipos offers invaluable insights into the "human" side of facilities engineering.
(2:38) - Tori's Career Path
(4:02) - Dive Ops and Exhibit Work
(4:25) Joe's Background: Navy, Backpacking, and Landing the Brookfield Zoo Job
(6:12) Navy and Military Backgrounds Shaping LSS Careers
(16:40) Joe's Career Path Through Albuquerque Aquarium and San Diego Zoo
(17:48) Dr. Jeff's Background: PhD and Starting at Disney's Living Seas in 1989
(22:58) Ozone and ORP: History and Chemistry
(29:27) Denitrification Deep Dive: Batch vs. Continuous Flow, Carbon Sources, Digesters
(35:34) Wetland and Salt Marsh Filtration, Steady-State Nitrate
(37:22) Dr. Jeff's Path Through Walt Disney Imagineering and Independent Consulting (EEG)
(42:14) LSS Design vs. Operations: Why Joe Moved into Design
(49:23) CFD Modeling for LSS Design
(50:45) Joe's Move to SeaWorld Abu Dhabi and Construction-Phase Realities
(5:17) Early Career at the St. Louis Zoo Life Support Department
(7:41) Working with Aging, Historic Facility Infrastructure
(10:29) The Move to Georgia Aquarium
(12:00) Zoo vs. Aquarium Life Support: Control Systems and Layout
(15:30) Moving into Management at Georgia Aquarium
(17:04) Returning to St. Louis to Help Open St. Louis Aquarium
(27:15) The COVID Shutdown Right After Opening
(27:57) Introducing Tenji Aquarium Design and the Design-Build Model
(29:30) Integrating with Other Design Disciplines via Revit and AutoCAD
(30:44) How Tenji Finds and Lands Projects
(33:32) Coral and Reef System Design: Dosing, Calcium Reactors, and Birch Aquarium
(36:26) Working with First-Time Owners and Performance Specs
(42:48) Closing Advice: Be Curious, Be Careful
(44:54) Outro and Sign-Off
This episode of INFLOW is made possible by our sponsors:
MDM Pumps – A trusted leader in high-performance pumps engineered for demanding aquatic life support applications. MDM Pumps delivers reliable, energy-efficient solutions that help aquariums, zoos, and aquatic facilities maintain exceptional water quality.
Telchine – Providing advanced automation and control solutions for aquarium life support systems, Telchine helps operators monitor, optimize, and manage critical LSS processes with precision, reliability, and real-time insights.
Subscribe to INFLOW for conversations with the leading experts shaping the future of aquatic animal life support systems, aquarium engineering, filtration technology, water quality science, and aquatic habitat design.
INFLOW is the podcast for professionals working in aquarium life support systems, water quality, aquatic engineering, and public aquarium operations. Subscribe on Apple Podcasts and Spotify for conversations with the industry's leading experts on LSS design, operations, maintenance, and innovation.
(0:27) - What Innovation Means (4:10) - AALSO Conference Meetup (5:25) - Paul's Water Quality Model (7:34) - Long Beach DO Case Study (12:32) - Operator Simulation Tool (15:03) - Troubleshooting DO Systemwide (19:44) - Design and Sustainability Uses (24:16) - Future Features and Data Needs (27:06) - CO2 vs Turbidity Priorities (29:56) - Animal Health Data Ideas (32:55) - Long Beach Testing Roadmap (37:40) - Iterating the Model Interface (38:46) - Sponsor Break - Longhorn Organics (42:53) - Chris Carr Otter DO Crisis (45:35) - DO Mapping and Backwash Tradeoffs (48:53) - Beyond DO Coliform Predictions (50:45) - Data Call and Wrap Up
Subscribe to INFLOW for conversations with the leaders, engineers, scientists, and operators shaping the future of aquatic animal life support systems.
INFLOW is the podcast dedicated to aquatic animal life support systems, aquarium engineering, water quality, and the professionals advancing the public aquarium industry.
