Recruiter's Glossary

Examples: Water Changes • Ozone Treatment • Nitrate Management

Biological Filtration

Term from Aquarium Management industry explained for recruiters

Biological Filtration is a natural cleaning process used in aquariums that helps keep water safe for fish and other aquatic life. It works by using helpful bacteria to break down harmful waste products into safer substances. Think of it like a natural cleaning crew that's always working in the aquarium. When aquarium professionals mention this on their resumes, they're showing they understand how to maintain healthy water conditions, which is a fundamental skill in aquarium management. This process is sometimes called "bio-filtration" or "bacterial filtration," and it's a key part of any aquarium life support system.

Examples in Resumes

Maintained Biological Filtration systems for 50+ marine species in a 10,000-gallon exhibit

Designed and implemented Bio-Filtration solutions for multiple public aquarium displays

Monitored Biological Filtration efficiency through regular water quality testing

Trained staff on proper maintenance of Bacterial Filtration systems

Typical job title: "Aquarium Technicians"

Also try searching for:

Aquarist Life Support System Technician Water Quality Specialist Marine Systems Technician Aquarium Maintenance Specialist Fish Care Specialist

Where to Find Aquarium Technicians

Professional Organizations

Online Communities

Job Resources

Example Interview Questions

Senior Level Questions

Q: How would you handle a sudden crash of the biological filtration system in a large public aquarium?

Expected Answer: A senior candidate should explain emergency procedures, including immediate water testing, backup system activation, and steps to re-establish the bacterial colony while ensuring animal safety.

Q: Describe how you would design a biological filtration system for a new 100,000-gallon exhibit.

Expected Answer: Should demonstrate knowledge of system sizing, bacteria establishment processes, and how to maintain optimal conditions for different species while considering budget and space constraints.

Mid Level Questions

Q: What are the key indicators that tell you biological filtration is working properly?

Expected Answer: Should mention monitoring of ammonia, nitrite, and nitrate levels, visual inspection of water clarity, and animal behavior observation.

Q: How do you establish biological filtration in a new system?

Expected Answer: Should explain the process of cycling a new system, including introducing beneficial bacteria, monitoring water parameters, and gradually adding fish load.

Junior Level Questions

Q: What are the three main types of aquarium filtration?

Expected Answer: Should be able to explain mechanical (removing particles), chemical (removing impurities), and biological (breaking down waste) filtration in simple terms.

Q: How often should biological filter media be cleaned or replaced?

Expected Answer: Should understand that biological filter media should rarely be replaced completely as it contains beneficial bacteria, and explain basic maintenance procedures.