Micro Reef:

Plug-N-Play Kit

Everything is included, from the tank and filtration to the corals, rock, sand, tools, and even the water!

No guesswork. No extra shopping. Just plug-and-play reefing.

Get Started

IN STOCK

Micro Tank | 40oz Desktop Aquarium

Bring the ocean to your desk

Sleek Display Tank + Stand
3‑Compartment Sump Filtration
Filter Media
Adjustable 3W, 50GPH Return Pump
5W LED Light
Polycarbonate Display & Sump Lids
Black Drain & Return Nozzles
Engraved Water‑Level Indicator

Ready to Get Started?

This guide will walk you through the full setup process: from unboxing to plugging everything in and preparing your tank for its first inhabitants.

How to Set Up Your 40oz Micro Reef Tank

PNW Custom

How to Clean Your Desktop Aquarium Pump (In Under 10 Minutes)

PNW Custom

Continue Learning

Top 5 Accessories to Upgrade Your Desktop Aquarium Setup

Discover the top 5 accessories that make maintaining a desktop aquarium easier and more enjoyable. Improve stability, boost aesthetics, and upgrade your small tank setup.

Top 5 Beginner Reef Tank Mistakes (and How to Avoid Them)

Learn about the top 5 beginner reef tank mistakes and how to avoid them. Perfect for desktop aquariums. Free checklists and compatibility charts included.

Coral Starter Pack: Setup Guide

Just received your Coral Starter Pack from PNW Custom? Learn how to easily set up your new 40oz Micro Tank with simple coral acclimation, placement, and care tips for beginners. Start your desktop reef with confidence!

Explore Resources

Looking for the Ultimate Upgrade?

Meet the Micro Reef PRO and Roaming Reef Collection: built for hobbyists who want more from their Micro Tank.

Get upgraded lighting, flow, filtration, and functionality for your everyday reef, plus travel-ready options designed to make taking your aquarium on the go easier than ever.

Start with a complete Micro Reef PRO or upgrade your existing Micro Tank with individual components.

Shop the Collection