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10% off Test Kits Unlock the secrets to maintaining high water quality using test kits! Save 10% with coupon code TESTNOW until midnight Sunday! Aquarium Test Kits: Parameters to Test for in Fish-Only and Reef Tanks

Knockout Nitrate! Denitrator Deals and other Nitrate-Lowering Solutions on Sale Today! How to Lower Your Nitrate with a Biological Denitrator How to Lower Nitrate (and Phosphate) in a Reef Aquarium using BioPellets Filter Media Guide: Carbon, GFO and BioPellets

VIDEO: Lower Your Nitrate with a BioDenitrator Put bacteria to work for you in the battle against nitrate! How To Mix Saltwater For Your Aquarium How to Lower Nitrate (and Phosphate) in a Reef Aquarium using BioPellets

The AutoAqua Smart ATO Micro with a DIY Twist! Reef hobbyist and engineer Randy Lindsay returns with this guest post about his experience swapping out the built-in pump of Autoaqua's Smart ATO Micro with a peristaltic pump.

10% off Frozen Food We ship frozen food anywhere in the contiguous U.S. for a low flat rate! Save 10% on your order until midnight Sunday w/ coupon code FROZEN Feed Frozen Fish Food to Increase Fish Color and Vitality Coral Food: Make Your Corals Fat and Healthy

Miss RAP Orlando? Here's what was in our booth... PLUS filtration and media deals, plug & play tanks and new calcium reactors!

VIDEO: AquaMaxx NemoLight LED Strip Lights The NemoLight is a feature-rich fixture for an affordable price! READ MORE ABOUT THE NEMOLIGHT: Reef Builders: NemoLight LED Review - Part 1 and Part 2 Advanced Aquarist: AquaMaxx launches NemoLight LED lights

Here is a new video we just put up today about the AquaMaxx NemoLights:

You Can't Go Wrong ... ... with these customer favorites! Check out our shoppers' favorite pumps, skimmers, LEDs, rocks, ATO, and RO/DI systems for the month of April by clicking on the banner below.

AIO Jellyfish Tanks, New + Discounted Skimmers and LED Deals Win a tank, get a catalog, score a FREE shirt and save some dough!

How to Set Up an Orbit 20 Jellyfish Aquarium and Care for Moon Jellies Save 15% on the most expensive item in your order today (4/15/16) with coupon code JELLYFISH!

Only @ MD: AquaMaxx Rimless Aquariums (in 19 sizes!) Get the high-end look of an ADA aquarium for a fraction of the cost!

Awesome upgrades to optimize your RO/DI system Discounts on drinking water kits, DI resin, filter kits and MORE! 5 Upgrades to Maximize the Performance of Your RO/DI System How to Replace Your RO/DI Filter Cartridges

Rare 10% off Trigger Systems Sale Time is running out to save on Sumps and ATO Reservoirs! You can also save 10% on overflow boxes using the same coupon. Enjoy! :-) How to Add a Sump Using an Overflow Box How to Set Up a Refugium in Your Sump How to Build Your Own Custom Sump

VIDEO: 5 Easy RO/DI Upgrades Add a canister, booster pump, flush valve, float & shut-off valve and a drinking water kit! How to Build a Saltwater Mixing Station How to Replace Your RO/DI Filter Cartridges

VIDEO: Build Your Own Custom Sump We'll show you how to build your own sump in today's video tutorial! HOW TO SET UP A REFUGIUM IN YOUR SUMP HOW TO ADD A SUMP USING AN OVERFLOW BOX

10% off Sumps & Overflow Boxes Add a Sump to Your Reef Tank Using an Overflow Box

Train your fish using the all-new AquaBuzz! Remote trainer reduces aggression and curbs unwanted behavior!

VIDEO: Felicia's 40 Gallon Mixed Reef Predator Tank We are back with another amazing Featured Tank profile. You don't want to miss this!

1 DAY SALE :D 24 HOUR SALE IS NOW UNDERWAY :D