Choosing the Right Frag Rack: A Comprehensive Guide

Whether you’re just starting out in the aquarium hobby or you’re a seasoned reefer with a full grow-out system, choosing the right frag rack can make a huge difference in coral growth and health.

At PNW Custom, we’ve developed a line of frag racks designed specifically for small tanks, frag shows, and everything in between: each with unique features to suit different needs. In this guide, we’ll break down the different frag rack styles we offer, what makes them special, and how to choose the best one for your aquarium.

Small Frag Racks

Magnet frag racks come in many sizes and are perfect for making use of vertical real estate without cluttering the tank floor. These compact solutions allow you to keep your reef organized without overwhelming your aquascape. Whether you’re looking to grow out a few select pieces or simply want to display your favorite coral, small racks offer versatility and convenience. Want to highlight a single showpiece frag? The Single Hole Frag Rack is perfect for spotlighting one coral in a clean, minimal setup and is great for photography, display, or isolation. Looking for a flexible system you can swap out over time? Our Modular Frag Rack System lets you start small and expand as your collection grows, giving you control over layout and coral placement while maintaining a sleek look.

Medium Frag Racks

If you have a bit more room in your tank, upgrading to a medium frag rack gives you greater capacity without taking up too much room. It’s the perfect middle ground: large enough to hold a solid variety of frags, but still compact enough for desktop reef tanks. The Premium Medium Frag Rack stands out with its thoughtful design and durability. It features a slip-and scratch-resistant magnet bar, ensuring a secure hold even in higher flow environments or thicker glass tanks. The sleek, modern design blends seamlessly into any reef, making it both functional and aesthetically pleasing. With enough space for multiple frags, this rack is ideal for coral growers looking to scale up their collection while maintaining a clean and organized layout.

Large Frag Racks

Have plenty of room available? Large frag racks are an excellent solution when you need maximum frag capacity without compromising on stability or organization. Whether you're setting up a dedicated grow-out tank, preparing for a frag swap, or managing inventory for coral sales, a large rack gives you the space and layout you need to work efficiently. These racks are designed to handle dozens of coral plugs at once, making them ideal for serious hobbyists, vendors, and reefers with high-volume setups. Their wider footprint and sturdy magnetic mounting allow for secure placement even in high-flow environments or during transport. With the ability to display, grow, and frag corals all in one space, large frag racks streamline the process of coral propagation and make it easier to keep your collection organized and thriving.

What Makes PNW Custom Magnets Different

One of the most critical features of any magnetic frag rack is the quality of the magnets, and at PNW Custom, we’ve taken extra steps to ensure they’re built to last. Our magnets are fully sealed inside laser-cut acrylic and bonded with a specialized reef-safe resin that prevents corrosion, even after years of saltwater exposure. These magnets are engineered specifically for reef use, offering strong holding power through up to ½" glass or acrylic, while resisting slippage and scratching. Whether you’re mounting a small rack in a desktop tank or a large frag system in a grow-out setup, you can trust that your frags are supported by magnets designed with science, safety, and long-term durability in mind. Learn more in our Science Behind PNW Custom Magnets blog.

Find the Perfect Frag Rack for Your Tank

Frag racks are a smart, efficient way to organize, grow, and showcase your coral collection. At PNW Custom, we offer a wide variety of magnetic frag racks tailored for different tank sizes, mounting needs, and aesthetic preferences. Explore the full collection here:👉 PNW Custom Frag Racks and Stands and find the one that fits your reef.