What To Put In A Refugium (Setup Guide)

Yes, you can put fish in a refugium but under typical circumstances, it isn't ideal. Many fish will need room to swim and most refugiums become packed with macroalgae making it difficult for the fish to move around freely.

Why this matters Refugium setup guide is one of the most-searched topics in the filtration category, and most existing online content either glosses the basics or sells you a product without explaining when you need it. This guide breaks it down: how it works, when to use it, how to size it, what mistakes to avoid, and how to choose the right product without getting upsold.
Saltwater Aquarium Refugium

That's the magic of a saltwater aquarium refugium . In this complete guide , we're going to walk through everything you need to know. We'll cover what a refugium is, the incredible benefits it offers, a step-by-step setup process, and how to maintain it for long-term success. Let's build you a healthier, more stable reef tank, together.
How to setup a refugium from scratch is important for beginner-level Aquarium hobbyists. We outline all of the best practices you need!

Complete Refugium Setup Guide
Complete refugium setup guide for reef tanks. Learn macroalgae selection, lighting, copepod cultivation, and natural nutrient export for healthier corals.
Learn how to set up a refugium for improved water quality, increased biological diversity, and enhanced nutrient cycling in your aquarium with our comprehensive guide .

Sump & Refugium Guide
Home / Guides / Sump & Refugium Sump & Refugium Guide : Design, Plumbing & Setup Everything you need to know about adding a sump and refugium to your reef aquarium — from choosing the right overflow and plumbing to growing macroalgae and cultivating copepods. Compiled from the best practices of Melev's Reef, Bulk Reef Supply, Gmac Reef, AlgaeBarn, ReefBum, and the reef keeping community.
In this guide we cover everything you need to know about setting up a refugium for your reef tank & all of the benefits that they offer!

How To Set Up A Refugium Step by Step Guide
First, find a place inside or outside your fish tank where you want to set up the refugium , based on its type. Then add the media and substrate, such as sand or mud, rocks, macroalgae, amphipods, or copepods, and pour in some phytoplankton. After that, let the new refugium environment settle before you turn on the return pump and turn on the light. But the thing about refugium is that it takes ...








The ideal refugium has steady, gentle flow that keeps nutrients circulating without creating turbulence. In sump systems, water should move smoothly through the refugium before returning to the display tank. Setting up a refugium is a rewarding way to improve water quality and support a healthier aquarium environment.