The Aquarium Adviser
Saltwater

Photo by Mike Johnston on Openverse (CC BY 2.0)

Category

Saltwater

Macro view of tiny copepods and zooplankton in a reef aquarium refugium
Saltwater

Copepods in a Reef Tank: How to Grow a Pod Population

What copepods are, why a reef tank needs them, and how to build a self-sustaining refugium population that feeds mandarin dragonets, pipefish, and corals.

Photo by Lion Pods Live Copepods on Openverse (CC BY 4.0)

A saltwater fish tank with live rock aquascaping and marine fish swimming among the rockwork
Saltwater

FOWLR vs Reef Tank: Which Saltwater Setup Is Right for Beginners?

FOWLR and reef tanks both start with live rock, but they part ways on lighting, water chemistry, and which fish you can keep. Here's how to decide which saltwater setup fits a beginner best.

Photo by Makuahine Pa'i Ki'i on Openverse (CC BY 2.0)

Close-up of stony corals in a reef aquarium with dosing equipment in the background
Saltwater

Calcium and Alkalinity Dosing for Reef Tanks: Two-Part Dosing Explained

Reef tanks pull calcium and alkalinity out of the water faster than water changes can replace them. Here's how two-part dosing keeps both parameters stable without letting them precipitate out of solution.

Photo by cheetah100 on Openverse (CC BY 2.0)

What Do Triggerfish Eat?
Saltwater

What Do Triggerfish Eat?

Most triggerfish are carnivorous and eat invertebrates like shrimp and crabs, but their diet varies by species-some also consume algae and zooplankton. Discover what to feed your triggerfish and how species like the Clown, Niger, and Picasso differ in their dietary preferences.

Photo by Johnmartindavies on Openverse (CC BY-SA 3.0)

Panther Grouper Fish Care
Saltwater

Panther Grouper Fish Care

Panther groupers are stunning large saltwater fish with distinctive spotted patterns, but they require a minimum 300-gallon tank and grow up to 20 inches-making them a commitment for intermediate to advanced hobbyists only.

Photo by Raimond Spekking on Openverse (CC BY-SA 4.0)

Aquarium Equipment

Are Protein Skimmers Necessary in a Saltwater Aquarium?

While a saltwater aquarium can technically survive without a protein skimmer, these devices are essential for removing dissolved organic matter and keeping water pristine-making them one of the most important investments you'll make in the hobby.

How To Breed Tomato Clownfish?
Fish

How To Breed Tomato Clownfish?

Tomato clownfish are among the easiest saltwater fish to breed, thanks to their unique sex-changing ability-here are the three main approaches from cheapest to quickest, plus essential setup and larval care guidance.

Photo by Lonnie Huffman on Openverse (CC BY 3.0)

21 Facts about Clownfish and More a Lot of Information
Fish

21 Facts about Clownfish and More a Lot of Information

Clownfish are among the easiest marine fish to keep, but they still require careful saltwater tank setup, proper water chemistry, and consistent daily care to thrive.

Photo by CybersamX on Openverse (CC BY 2.0)

Clownfish Tank Mates for 30-Gallon Tank
Fish

Clownfish Tank Mates for 30-Gallon Tank

A 30-gallon saltwater aquarium can house several fish species alongside clownfish, but choosing compatible tank mates requires understanding temperament, size, and dietary needs. The right companions will thrive without competing aggressively or outgrowing your tank.

Photo by chris favero on Openverse (CC BY-SA 2.0)