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The Benefits of Using T5/LED Hybrid Lighting for Your Reef Tank Combine T5 with LED to create your ultimate reef lighting system!

How to Build a Coral Quarantine Tank Prevent hitchhikers, parasites and diseases from entering your display aquarium by setting up a quarantine tank to isolate and observe new corals. How to Build a Fish Quarantine Tank

25% off EDGE LEDs, $43 off BioCubes, $40 off Chillers & MORE PLUS water changers, frozen foods, water tests and UV sterilizers

VIDEO: How to Care for a Flame Wrasse The Hawaiian Flame Wrasse is beautiful, hardy, reef safe and will thrive in captivity under the right conditions. How to Care for Tridacna Clams in Your Saltwater Aquarium Painted Frogfish: How to Build a Species-Specific Aquarium

Adiós, organics! BIG Skimmer Sale TODAY! 10% off Protein Skimmers with coupon code PROTEIN. Ends Sunday! What makes a "good" protein skimmer?

LAST CHANCE: 11% off (almost) Everything! 11% off 3,400 aquarium products ends tonight @ midnight! HAPPY LEAP YEAR!!!

Leap Year Sale: 11% off Storewide! A sale this good only comes along once every four years!

Leap Year Sale: 11% off Storewide! A sale this good only comes along once every four years!

How to Build a Fish Quarantine Tank Treat sick fish plus prevent parasites and disease from entering your display aquarium by setting up an inexpensive quarantine tank. Here's how! How to Acclimate Fish Using the Innovative Marine AccuDrip

Tank Hacks: Easy Upgrades for Your Fusion Nano 20 Lighting, filtration, flow, aquascaping & auto-top off recommendations for the Innovative Marine Fusion Nano 20 Aquarium! Tank Hacks: Easy Upgrades for Your JBJ RL-45 Rimless Aquarium BioCube Hacks: 6 Easy Ways to Upgrade Your Nano

How to Tune a Calcium Reactor to Meet Calcium & Alkalinity Demands The trick to dialing in your reactor is to match the rate of supplementation from the reactor to the rate of consumption by your corals. Watch today's video to learn more! Calcium Reactors, Part 1: How They Work and What...

Improve Your Flow: 235 Items on Sale! Water movement is vital for your aquarium animals, proper gas exchange and effective filtration. Take 10% off select Pumps, Powerheads & Wavemakers with coupon code CURRENT now through Sunday! How to Choose the Right Powerhead for your Reef Aquarium...

Win a NYOS QUANTUM 160 Protein Skimmer! Upgrade your skimmer on us with the high-performance NYOS QUANTUM 160 Protein Skimmer. There is no purchase necessary to enter or win! >> ENTER NOW <<

Presidents Day Sale: 15% off the item of your choice! TODAY ONLY: Get 15% off the most expensive item in your order!

MACNA 2016: Come see us in San Diego! The Marine Aquarium Conference of North America is coming to SoCal! Meet us in booth #105 to check out new tank toys and buy some goodies!

Nano Skimmers, Recent Reviews, Most Searched and New Arrivals PLUS: 10% off new Soft-Freeze foods and 10% off all Filter Media! Neptune Systems DŌS Dosing and Fluid Metering System Filter Media Guide: Carbon, GFO and BioPellets Mechanical Filtration: Remove waste before it fouls your...

VIDEO: How to Care for Clams Tips to help you purchase, acclimate & care for clams in your aquarium

TODAY: Clam Care + Skimmer, Pump & Acclimation Tank Deals You'll be happy as a clam with today's deals and weekend specials! How to Choose the Right Powerhead for your Reef Aquarium Q&A Series #9: What Makes a "Good" Protein Skimmer?

Jellyfish tanks—now in stock! The Orbit 20 is perfect for keeping jellyfish at home or on your desktop! Marine Depot KleanWater RO & RO/DI: Affordable Tap Water Filtration Neptune Systems Apex WAV: Limitless Flow Capabilities, Smart Data and AI

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...