The Aquarium Adviser
Saltwater

Photo by Mike Johnston on Openverse (CC BY 2.0)

Category

Saltwater

Learn How to Use a Deep Sand Bed in Your Tank
Saltwater

Learn How to Use a Deep Sand Bed in Your Tank

A deep sand bed (DSB) is a 3-6 inch layer of fine sand colonized by beneficial bacteria and sand-dwelling organisms that acts as a biological filter in saltwater aquariums. When set up correctly, it performs both nitrification and denitrification, helping to maintain stable water chemistry in reef and marine systems.

Photo by 300td.org on Openverse (CC BY 2.0)

Saltwater

How to Cure Live Rock in 7 Steps

Freshly imported live rock needs careful curing in an isolated container to remove decaying organisms and toxic compounds before you add it to your display tank. The process typically takes 2-4 weeks and requires daily water changes, circulation, and careful monitoring.

Types of Live Rock for Saltwater Aquarium
Saltwater

Types of Live Rock for Saltwater Aquarium

Live rock is the foundation of a successful saltwater aquarium, providing both biological filtration and habitat-but choosing the right type and understanding cured versus uncured rock is crucial to avoid costly disasters.

Photo by Wonderlane on Openverse (CC BY 2.0)

7 Types of Saltwater Angelfish (Pomacanthidae Family)
Fish

7 Types of Saltwater Angelfish (Pomacanthidae Family)

Saltwater angelfish (family Pomacanthidae) range from peaceful dwarf species to majestic large fish, each with distinct coloring, behavior, and care requirements-but none breed reliably in captivity.

Photo by Derek Keats on Openverse (CC BY 2.0)

Puffer Fish - Tankmates and Diet
Fish

Puffer Fish - Tankmates and Diet

Puffer fish are aggressive and demand specialized care-most species cannot safely live with other fish, and they require live or hard-shelled prey to keep their teeth sharp and healthy.

Photo by wwarby on Openverse (CC BY 2.0)

12 Best Saltwater Fish for 55 Gallon Tank
Saltwater

12 Best Saltwater Fish for 55 Gallon Tank

A 55-gallon saltwater tank works best when stocked with peaceful, hardy species that occupy different water levels-blennies and gobies near the bottom, wrasses throughout, and angelfish at multiple levels. Here are 12 proven species that thrive together in this size aquarium.

Photo by Lisa Brewster on Openverse (CC BY-SA 2.0)

Saltwater Tank Setup Checklist for Reef and Marine
Aquarium Equipment

Saltwater Tank Setup Checklist for Reef and Marine

Setting up a saltwater tank correctly requires careful prep work, a specific order of assembly, and patience for water maturation before adding fish. Follow this step-by-step checklist to avoid costly mistakes.

Photo by Tirch on Openverse (CC BY 2.0)

Difference Between Saltwater and Freshwater: Fish and Aquarium
Fish

Difference Between Saltwater and Freshwater: Fish and Aquarium

Freshwater and saltwater fish have evolved completely different ways to regulate their bodies in their respective environments, which determines everything from equipment to maintenance to the species you can keep. Understanding osmoregulation-how fish balance internal chemistry against external water salinity-is essential before choosing between a freshwater or saltwater tank.

Photo by ecastro on Openverse (CC BY 2.0)

Common Tang Diseases, How to Spot Them and Treatment
Saltwater

Common Tang Diseases, How to Spot Them and Treatment

Tangs are susceptible to disease from poor water conditions, nutritional gaps, parasites, and aggression-but early spotting and correct treatment can save your fish. Here's how to identify the five main disease categories and address each one effectively.

Photo by jurvetson on Openverse (CC BY 2.0)