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"By the Pound" means you are choosing the weight of your rock.  Ex: Qty 5  is 5 Pounds of Rock, NOT 5 Rocks. Selling individual rocks is impossible due to the fact that every rock is unique in size/shape/weight.   Base Dry Rock - 20...

"By the Pound" means you are choosing the weight of your rock. Ex: Qty 5  is 5 Pounds of Rock, NOT 5 Rocks. Selling individual rocks is impossible due to the fact that every rock is unique in size/shape/weight. Marco ReefSaver is a natural...

Fritz ProAquatics Reef Pro Mix (RPM) is manufactured using only the highest quality raw materials. Formulated by researchers and marine scientists, RPM contains all of the necessary major and minor elements of natural sea water that are utilized by...

"By the Pound" means you are choosing the weight of your rock.  Ex: Qty 5  is 5 Pounds of Rock, NOT 5 Rocks. Selling individual rocks is impossible due to the fact that every rock is unique in size/shape/weight. This is Marco Rocks newest...

Tired of battling persistent bubble algae and unsightly hair algae? The Emerald Crab (Mithraculus sculptus) is your diligent, all-natural solution. Hailing from the vibrant reefs of the Caribbean, this small but mighty invertebrate is a must-have for any...

Tropic Marin Pro-Reef Sea Salt – 200 Gallon Bucket (Germany) At a Glance The Gold Standard for Modern Reef Keeping. Tropic Marin Pro-Reef is the premium, pharmaceutical-grade salt mix engineered specifically for reef aquariums that require...

Because Tigger-Pods (Tigriopus californicus copepods) swim upwards with a stimulating, jerky motion, they are attractive to a wide range of fish like Mandarin dragonets, Seahorses and Pipefish. They are easy to...

"By the Pound" means you are choosing the weight of your rock.  Ex: Qty 5  is 5 Pounds of Rock, NOT 5 Rocks. Selling individual rocks is impossible due to the fact that every rock is unique in size/shape/weight.   Rock Sizing:...

These peppermint shrimp are captive-bred, tank raised & completely reef-safe, and will consume nuisance Aiptasia anemones. The name Peppermint Shrimp applies to a variety of Lysmata species that are distributed along the Eastern...

See your corals in a whole new light through the Fritz Aquatics coral viewing glasses!These specially designed glasses block the blue light so you can see your corals at their most vibrant.

The ATI ICP-OES Pro kit is identical to the original ATI ICP-OES test. The ATI ICP-OES Pro Water Analysis is a laboratory water analysis of 43 parameters in a reef tank that provides a complete overview of a tank's health, which is...

We start with our ReefSaver rock with result looking something straight from the ocean.  This is not a wet or "live" product.   Our Coralline rock features no paint and no concrete.  We use an organic colorant that preserves all of...

We are pleased to announce our NEW HI98319 waterproof salinity and temperature tester! Waterproof and floats! Includes 4x of the Salinity Calibration Fluid Packets. Automatic Calibration – A 35.00 ppt solution is used for calibration and...

The Best-Dressed Algae Eater - 0.5" - 1.0" Introduce a touch of class and unmatched cleaning power to your aquarium with the Tuxedo Urchin. Arguably one of the most beautiful and popular urchins in the hobby, this dapper creature features a dark,...

Tropic Marin® All-For-Reef Powder is an ultra-concentrated mineral blend, with which an easy-to-use, highly concentrated all-round solution for supplying all key minerals and trace elements in newly established and averaged reef aquariums...

The Reef's Tireless Janitor Discover the hidden gem of aquarium clean-up crews with the incredible Brittle Starfish. A close relative of the Serpent Star, the Brittle Star is a master scavenger, using its long, slender, and highly flexible arms to...

The HI782 Marine Nitrate High Range Colorimeter is specifically designed to quickly and accurately determine high levels of nitrate for saltwater aquariums and marine applications. With a digital read out, there is no more struggling to determine colors...

Complete Bioculture for Establishing Biological Filtration & Rapidly Improving Water Quality Overview Complex system of non-pathogenic aerobic and anaerobic microbes, as well as natural enzymes, specifically formulated to establish biological...

The Ultimate Bubble Algae Destroyer Meet the Pitho Crab, the unsung hero of the reef aquarium clean-up crew. Often mistaken for its cousin, the Emerald Crab, the Pitho Crab is a specialized herbivore with an incredible appetite for one of the most...

Live product. Keep refrigerated. Do not freeze. Refrigerated life is 4 months with a temperature Range of 34 - 50 degrees F. Use before expiration date on bottom of bottle. Shipping: Live Foods Ship on Select Days & Have a 100% Arrive Alive...

"By the Pound" means you are choosing the weight of your rock.  Ex: Qty 5  is 5 Pounds of Rock, NOT 5 Rocks. Selling individual rocks is impossible due to the fact that every rock is unique in size/shape/weight. Real Reef Branch Rock is our...

PNS Probio Live purple non-sulfur bacteria (Rhodopseudomonas palustris): Live Food for Coral high in protein and vitamin B12 Removes Ammonia. Removes Phosphates. Free Swimming. Photosynthetic. Anaerobic...

Now Includes a Prepaid USPS First Class Shipping Label + Testing is Now Done in the USA! The results of this test provide you with the most detailed analysis of marine aquarium water you've ever seen, enabling you to understand exactly what's missing,...

The Fauna Marin Reef ICP Total Test gives a quick, accurate, and easy overview of over 90 water values in reef aquariums. From macro elements to trace elements and pollutants, you get a complete overview with corresponding dosage and action...

Overview Brightwell Aquatics Lugol’s is an extremely powerful iodine solution. It should only be used by advanced reef aquarists to dose iodine as well as to create a dip for corals and their allies. The importance of iodine in a reef aquarium...

This hardy, mild-mannered Damselfish is a great candidate for nearly any reef aquarium. Lacking most of the obnoxious personality of other Damsel species, these fish get along with others in a variety of aquatic settings. Staying quite small, our...

The Dancing Jewel of Nano Reefs (VERY SMALL) Add a splash of personality and vibrant motion to your aquarium with the one-and-only Sexy Shrimp. Famous for its unique behavior, this tiny shrimp holds its abdomen high in the air and sways rhythmically...

One (1) Medium Ocellaris Clownfish The Ocellaris, or False Percula Clownfish is the most popular clownfish species in the marine aquarium hobby. It is called the False Percula because it is closely related to, and easily confused with, the Percula...

This proven and effective treatment helps kill aiptasia and prevents it from reproducing. When used properly, it is reef safe and will not harm corals or other inhabitants. If you've ever had aiptasia anemones in your prized aquarium, you'd certainly...

The Authentic Reef-Safe Sand Cleaner Achieve a flawlessly clean and healthy sandbed with the one true Reef Safe Sand Sifting Starfish, Archaster typicus. This dedicated detritivore is nature's perfect solution for maintaining a pristine substrate. It...

The Ultimate Hair Algae Destroyer When it comes to eradicating stubborn nuisance algae, few members of the cleanup crew can compete with the raw power and efficiency of the Pincushion Sea Urchin. This classic, round-bodied urchin is a voracious...

Extreme Accuracy. Easy to Test in 4 Steps - Zero the Checker, Add a regent to your water sample, Insert the Vile in the Checker, Read the Numbered Results. BOOM EASY. ZAIR. Zero, Add, Insert, Read. Includes reagents for 6x tests. The Hanna...

When it comes to copepods, Reef Nutrition has you covered whether you want to seed a tank, boost a population, use for feed or culture.  Pack contains 6 oz bottles of LIVE Apex-Pods, LIVE Tigger-Pods and Artci-Pods concentrate. Keep in...

A Living, Pulsing Flower for Your Aquarium Challenge everything you think you know about jellyfish with the mesmerizing Upside-Down Jellyfish. Unlike its free-floating relatives, this incredible species has evolved a lifestyle more like a coral or an...

The Ultimate Sand Sifting Powerhouse (2"+ Average Size) Meet the workhorse of the clean-up crew with the heart of a showpiece invertebrate: the Strawberry Conch. This essential sand-sifter is renowned for its tireless dedication to keeping your sandbed...

Complete Bioculture for Establishing Biological Filtration & Rapidly Improving Water Quality Overview Complex system of non-pathogenic aerobic and anaerobic microbes, as well as natural enzymes, specifically formulated to establish biological...

One Rock Flower Anemone Coral 3" to 5" in size. *Photo is a representation of the corals you will receive.  These are not WYSIWYG - Photo is a representation of the corals you will receive. ALL CORALS WILL VARY IN COLOR, SHAPE, SIZE,...

Oceans Wonders Ceramic Coral Frag Plugs are perfect for the propagation or fragging of hard and soft branching corals such as Acropora, Birdsnest, Montipora, Kenya Trees, Xenia, ect. They have a 3/4" crown with a 7/16" base and fit perfectly...

Fish Food – Frozen Brine Shrimp Baby Brine Shrimp Scientific name: Artemia sp. Hatched From Decapsulated Cysts Baby Brine Shrimp are the perfect food for baby fish and reef tanks. Our baby brine shrimp are obtained through hatching...

Not quite Reef Saver, not quite Shelf.  Quite Unique. This Hybrid MarcoRock seems to do it all.  It lends itself to be quite easy and forgiving to work with.  The shelving aspect allows for ample ridges and overhangs, which truly is the...