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How to Set Up a Refugium Inside Your Sump Hassle-free tips to set up a refugium inside your sump! All About That Sump - No Clutter Trigger Systems Sumps: Powerhouse Filter Boxes for Your Reef Tank

Give your tank a biological BOOST Add a refugium to improve biological filtration + grow pods for feeding! All About That Sump - No Clutter Add a Sump to Your Reef Tank Using an Overflow Box Q&A Series #4: What are the Benefits of a Refugium?

Q&A Video Series #10: “I am new to the hobby. Where should I begin?" If you are considering starting up your first reef aquarium, the simple 3-step plan outlined in today's video will help you get started on a path to success. Shop Reef Tank Packages > The Best Ways to Cycle Your Reef Aquarium

Upgrade your lighting on us with the best-selling, award-winning EcoTech Marine Radion XR15w Pro LED Light Fixture. The Radion XR15w Pro comes with a variety of preset modes to simulate lighting conditions around the world. Create your own lighting modes by adjusting color intensities to...

E5 lamps in stock + BIG biological filtration deals Upgrade to power-saving LED without changing your entire lighting system Your T5 will never be a T5 again! Biological Filtration: Grow Beneficial Bacteria for a Thriving Ecosystem All I want for Fishmas #6: ATI T5HO Bulbs + Euroquatics...

How to Grow Beneficial Bacteria for a Thriving Ecosystem Create the right conditions so Mother Nature can help clean your tank! The Best Ways to Cycle Your Reef Aquarium

Tank Hacks: Easy Upgrades for Your JBJ RL-45 Lighting, filtration, flow, aquascaping and auto-top off recommendations for your JBJ 45 gallon rimless aquarium Will It Fit? - JBJ 45 Gallon RL Rimless Cube Aquarium

An ATO the size of a penny! New Gear from AutoAqua, Vertex, AquaMaxx & Tunze + Tank Gadgets!

Introducing Fresh Frozen Food Delivery Healthy ingredients meticulously stored and shipped to your doorstep! Check out our infographic to see how we've improved our frozen delivery service... FEEDING FISH FEEDING CORAL

VIDEO: How to Choose the Right Powerhead In today's video, we'll explain how to select the perfect pump for your aquarium size and livestock. Already have a tank going? Let us know your tank size and what you're using for flow! Until next time, take care and happy reefkeeping!

Get a Fresh Start in 2016 Check out Tunze's new DC skimmer, AquaMaxx's new extra small media reactor (it's cute!) plus we've marked down 3 x RO/DI systems and all Cobalt Aquatics pellet food!

VIDEO: New Year's Resolutions for Reef Keepers Save money, save the planet, make new friends, eat right and MORE! What are your New Year's Reefolutions?

Season's Heatings! Enjoy 10% off Heaters, Chillers, Fans, Thermometers and Temperature Controllers MORE THAN 90 ITEMS ON SALE! Ends Sunday @ Midnight

New Year, New Gear! Here's to a successful 2016!

20% off Salifert Test Kits – LAST CHANCE! Stock up and save on OUR MOST POPULAR aquarium water test kits! Sale ends tonight @ midnight (as does our December Holiday Deals and Year-End Clearance)

10% OFF: LED Strips, MH/LED Fixtures and MORE Make the season BRIGHT with Reef Brite lights for your reef tank!

24 HOUR SALE: 10% off AquaMaxx Reactors Make a resolution for 2016 to improve the quality of your aquarium water! Purchase an AquaMaxx media, calcium or biopellet reactor by midnight and save 10% Just enter coupon code MAXXREACTORS during checkout to claim your savings

Seachem is still 10% off… but not for long! Don't miss this opportunity to stock up on media, test kits and supplements!

[Video] SR-80 Tank Update In Marine Depot's last video of 2015, we thought we'd give you an update on our office shallow reef tank! In case you missed an episode of this tank build, you can watch them all here. Don't forget to subscribe to our YouTube channel—we have 5 videos planned for January!

Year-End Clearance Event Take an additional 20% off already discounted aquarium gear! Once our clearance items are gone, they're gone forever! Use coupon code XMASCLOSEOUT before New Year's Day