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On Sale 15%
On Sale 15%38 Gallon Rimless AIO Glass Nano Tank w/ Black Stand - PRO Series - Fiji Cube
Fiji Cube$1,329.99$1,130.49Fiji Cube 38 Gallon Peninsula Rimless AIO Glass Nano Tank – PRO Series Transform your living space into a breathtaking underwater gallery with the Fiji Cube 38 Gallon Peninsula Rimless All-In-One... -
Octopus Cleaner 110 - Automatic Neck Cleaner - Reef Octopus
Reef Octopus$254.09Enhanced Skimmer Performance with Less Maintenance Automatic cleaning lids are designed to fit Reef Octopus protein skimmers wipe the neck clean for less maintenance and enhanced performance... -
Xport-BIO - 1/2" Cubes; Biological Filtration Media (1000 ML) - Brightwell
Brightwell Aquatics$37.02Ultra-porous Biological Media with Superior Performance Characteristics Overview Utilizes NanoIntelex Technology to create an enhanced material with vast surface area for colonization by... -
MicroBacter START XLM 15x (250 ML - 8 oz) - Brightwell
Brightwell Aquatics$28.24Professional 15x strength live tank starter nitrifying bioculture for rapidly cycling new marine fish and reef aquaria and brackish aquariums, and for recovering from overcrowding or disasters... -
MicroBacter START XLM 15x (500 ML - 16 oz) - Brightwell
Brightwell Aquatics$51.52Professional 15x strength live tank starter nitrifying bioculture for rapidly cycling new marine fish and reef aquaria and brackish aquariums, and for recovering from overcrowding or disasters... -
Octopus Cleaner 200 - Automatic Neck Cleaner - Reef Octopus
Reef Octopus$300.29Enhanced Skimmer Performance with Less Maintenance Automatic cleaning lids are designed to fit Reef Octopus protein skimmers wipe the neck clean for less maintenance and enhanced performance... -
AQUA FILTRA 10-20 Replacement Media Kit (2 Pack) - Sicce
Sicce$4.99Genuine Sicce AQUA FILTRA 10-20 Replacement Media Kit (2-Pack) The All-in-One Solution for Your Compact Aquarium's Filtration Needs Restore your filter to peak performance and ensure a pristine... -
Octopus Cleaner 300 - Automatic Neck Cleaner - Reef Octopus
Reef Octopus$369.59Enhanced Skimmer Performance with Less Maintenance Automatic cleaning lids are designed to fit Reef Octopus protein skimmers wipe the neck clean for less maintenance and enhanced performance... -
Reef BluePrint Isol8:Ca(OH)2 - Kalkwasser (5.0 kg) - Captiv8 Aquaculture
Captiv8 Aquaculture$70.22Calcium Hydroxide | "Kalkwasser" Characteri -
Regal 150 INT Protein Skimmer (up to 210 Gallons) - Reef Octopus
Reef Octopus$658.34The new and innovative Reef Octopus Regal 150-INT in-sump protein skimmer supplies powerful filtration for aquariums up to 210 gallons where sump space is not limited. The Reef Octopus Regal 150-INT... -
Xport-BIO - 1/2" Cubes; Biological Filtration Media (500 ML) - Brightwell
Brightwell Aquatics$21.41Ultra-porous Biological Media with Superior Performance Characteristics Overview Utilizes NanoIntelex Technology to create an enhanced material with vast surface area for colonization by... -
Elite 200 INT Super Cone Protein Skimmer - Reef Octopus
Reef Octopus$958.64The new and innovative Reef Octopus ELITE 200-INT in-sump protein skimmer supplies powerful filtration for aquariums up to 400 gallons. The Reef Octopus ELITE 200-INT is constructed of high-quality... -
Elite 220 INT Super Cone Protein Skimmer - Reef Octopus
Reef Octopus$1,108.79The new and innovative Reef Octopus Elite 220-INT in-sump protein skimmer supplies powerful filtration for aquariums up to 530 gallons. The Reef Octopus Elite 220-INT is constructed of high-quality... -
On Sale 15%
On Sale 15%Brittle Starfish (Ophiocoma spp.) - Cleanup Crew
Clean Up Crews$14.99$12.74The 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,... -
MQ-510: Full-Spectrum Underwater Quantum PAR Meter - Apogee
Apogee$575.77The Apogee Instruments Quantum Apogee Underwater Full Spectrum Meter MQ-510 is a meter that is designed for underwater PAR measurements. It is a self-powered analog full-spectrum quantum sensor with... -
Regal 300 INT Protein Skimmer (500-700 Gallons) - Reef Octopus
Reef Octopus$1,085.69In-Sump Skimmer Rated for Aquariums up to 700 Gallons Footprint: 18" x 12.2" | Reaction Chamber: 12" | Height: 25.4"Powered by: Reef Octopus VarioS-6S Controllable Pinwheel PumpController... -
Octopus Cleaner 150 - Automatic Neck Cleaner - Reef Octopus
Reef Octopus$277.19Enhanced Skimmer Performance with Less Maintenance Automatic cleaning lids are designed to fit Reef Octopus protein skimmers wipe the neck clean for less maintenance and enhanced performance... -
Octopus Cleaner 250 - Automatic Neck Cleaner - Reef Octopus
Reef Octopus$334.94Enhanced Skimmer Performance with Less Maintenance Automatic cleaning lids are designed to fit Reef Octopus protein skimmers wipe the neck clean for less maintenance and enhanced performance... -
Octopus Cleaner XP-8000 - Automatic Neck Cleaner - Reef Octopus
Reef Octopus$427.34Enhanced Skimmer Performance with Less Maintenance Automatic cleaning lids are designed to fit Reef Octopus protein skimmers wipe the neck clean for less maintenance and enhanced performance... -
AQUA FILTRA 40 Replacement Sponges only (4 Pack) - Sicce
Sicce$9.99Genuine Sicce AQUA FILTRA 40 Replacement Sponges (4-Pack) Maintain Peak Performance and Crystal-Clear Water in Your Aquarium Ensure your Sicce AQUA FILTRA 40 hang-on-back filter operates at its... -
AQUA FILTRA 40 Replacement Complete Cartridge (2 Pack) - Sicce
Sicce$20.99Genuine Sicce AQUA FILTRA 40 Replacement Complete Cartridge (2-Pack) The All-in-One Solution for Pristine Aquarium Water Keep your aquarium filtration system operating at peak efficiency with the... -
Reef BluePrint Isol8:Ca(OH)2 - Kalkwasser (1.0 kg) - Captiv8 Aquaculture
Captiv8 Aquaculture$19.37Calcium Hydroxide | "Kalkwasser" Characteri -
Reef BluePrint Isol8:Ca(OH)2 - Kalkwasser (2.5 kg) - Captiv8 Aquaculture
Captiv8 Aquaculture$35.83Calcium Hydroxide | "Kalkwasser" Characteri -
Octopus Cleaner 250 - Automatic Neck Cleaner w/ Float Switch Port - Reef Octopus
Reef Octopus$346.49Enhanced Skimmer Performance with Less Maintenance Automatic cleaning lids are designed to fit Reef Octopus protein skimmers wipe the neck clean for less maintenance and enhanced performance... -
Octopus Cleaner 300 - Automatic Neck Cleaner w/ Float Switch Port - Reef Octopus
Reef Octopus$381.14Enhanced Skimmer Performance with Less Maintenance Automatic cleaning lids are designed to fit Reef Octopus protein skimmers wipe the neck clean for less maintenance and enhanced performance... -
AQUA FILTRA 10-20 Replacement Complete Cartridge (2 Pack) - Sicce
Sicce$8.99Genuine Sicce AQUA FILTRA 10-20 Replacement Complete Cartridge (2-Pack) The Ultimate All-in-One Filtration Solution for Your Nano Aquarium Ensure your small aquarium remains a pristine and healthy... -
On Sale 50%
On Sale 50%(EXPIRED 4/26) MicroBacter START XLM 15x (500 ML - 16 oz) - Brightwell
Brightwell Aquatics$51.52$25.99EXPIRED Professional 15x strength live tank starter nitrifying bioculture for rapidly cycling new marine fish and reef aquaria and brackish aquariums, and for recovering from overcrowding or... -
Regal 200 INT Protein Skimmer (200-400 Gallons) - Reef Octopus
Reef Octopus$866.24The new and innovative Reef Octopus Regal 200-INT in-sump protein skimmer supplies powerful filtration for aquariums up to 400 gallons where sump space is not limited. The Reef Octopus Regal 200-INT... -
Elite 150 SSS Space Saver Super Cone Skimmer - Reef Octopus
Reef Octopus$1,074.14The new and innovative Reef Octopus Elite 150-SSS in-sump protein skimmer supplies powerful filtration for aquariums up to 400 gallons where sumps space may be limited. The Reef Octopus Elite... -
Elite 220 SSS Space Saver Super Cone Skimmer - Reef Octopus
Reef Octopus$1,484.16The new and innovative Reef Octopus Elite 220-SSS in-sump protein skimmer supplies powerful filtration for aquariums up to 530 gallons where sumps space may be limited. The Reef Octopus Elite... -
(RENT OR BUY) MQ-510: Full-Spectrum Underwater Quantum PAR Meter - Apogee
Apogee$532.00Purchase and return this item within 30 days, your purchase will be refunded minus the restocking/rental/shipping fee of $100. All rental products have a different fee based on the retail cost of the... -
Reef BluePrint Isol8:Br - Bromide (355mL, 12 oz) - Captiv8 Aquaculture
Captiv8 Aquaculture$63.24Parameter -
Reef BluePrint Isol8:Ca - Calcium Solution (1006 mL) - Captiv8 Aquaculture
Captiv8 Aquaculture$22.45Parameter -
Reef BluePrint Isol8:Ca - Calcium Solution (355 mL) - Captiv8 Aquaculture
Captiv8 Aquaculture$13.25Parameter -
Elite 150INT Super Cone Protein Skimmer - Reef Octopus
Reef Octopus$808.49Our Very Best In-Sump Skimmer for Aquariums up to 210 Gallons Footprint: 11.4" x 10.4" | Reaction Chamber: 6" Super Cone | Height: 20.6"Controllable Pump: Reef Octopus 24V VarioS-2S Ultimate in... -
Florin-P (500g) - Brightwell
Brightwell Aquatics$15.54Inorganic Phosphorus Source for all Planted Aquaria Overview Concentrated source of inorganic phosphorus for use in planted aquaria. Formulated utilizing extensive research on aquatic plant... -
Hydrat-MG (2L) - Brightwell
Brightwell Aquatics$42.20Solution of Hydrated Magnesium Salts for Use in Reef and Marine Aquaria Overview Safely increases magnesium concentration in all marine and reef aquaria. Utilizes specific magnesium salts to... -
On Sale 15%
On Sale 15%Serpent Starfish (Ophioderma spp.) - Cleanup Crew
Clean Up Crews$29.99$25.49Serpent Starfish (Ophioderma spp.) - Colors Vary. Most are brown/black in color. The Ultimate Reef Scavenger and Master of Stealth Introduce a touch of serpentine grace to your aquarium with the... -
Reef BluePrint Isol8:Sr - Strontium (60 mL) - Captiv8 Aquaculture
Captiv8 Aquaculture$12.23Parameter -
Max Nano XL G2 - 33 Gallon Aquarium (No Stand) - Red Sea
Red Sea$1,129.00The deepest & widest Plug & Play NANO system The MAX NANO G2 XL comes fully equipped with everything needed to sustain a reef aquarium, sparing you from dealing with component selection or...
Featured Products
AR836 Algae Reactor 2026 (Commercial) - Geo's Reef
Geo's Reef
$1,849.00
The NEW 2026 GEO AR836 Algae Reactor Commercial is designed to filter your aquarium water by removing phosphates, nitrates, Co2 and help raise your aquarium pH without the use of artificial media...
On Sale
15%
On Sale
15%
Red Acan Colony WYSIWYG - SAQ Coral Farm
Saltwater Coral Farm
$129.99
$110.49
Red Acan Colony WYSIWYG (Egg crate squares are 3/4")
If you are looking to buy vibrant color coral online to add to your reef tank, this is the best choice.
Red Acan Colony WYSIWYG is a fast...
7" NOSOK Filter Sock No Sock Replacement Silencer Cup - VCA
VCA Vivid Creative
$74.95
Stop Washing Dirty Filter Socks Forever
Nobody likes dealing with a laundry bucket full of dirty, foul-smelling 7-inch filter socks. Traditional filter cups choke flow quickly, and automated fleece...
Free ICP Test Kit - ATI
ATI
$19.99
FREE ON ALL ORDERS OVER $150 - Just add to Cart!
ATI Free Seawater ICP
Free ICP test for your seawater!
With the ATI ICP test service you can send ATI a seawater sample. ATI will test your...
Carbo Ex Filter (1.5 Liter) - Includes 1000g Granulate - ATI
ATI
$44.95
ATI® Carbo Ex Filter 1.5L
The ATI® Carbo Ex Filter 1.5Lis a ready-to-use, single-use filter cartridge containing 1,000 grams (approx. 1.25 liters) of ATI Carbo Ex Media and a fine dust filter.ATI®...
ION-B Ca/Mg+ Powder (2.245g - Makes 6,000 mL) - NYOS
NYOS
$44.99
The Nyos® ION-B method is a state-of-the-art dosing system for modern reef tanks. The system is simple and intuitive and can be individually adapted to the needs of your aquarium.
With just two...
ION-B Ca/Mg+ Powder (1,122g - Makes 3,000 mL) - NYOS
NYOS
$24.99
The Nyos® ION-B method is a state-of-the-art dosing system for modern reef tanks. The system is simple and intuitive and can be individually adapted to the needs of your aquarium.
With just two...
ION-B ALK/pH+ Powder (1,342g - Makes 6,000 mL) - NYOS
NYOS
$44.99
The Nyos® ION-B method is a state-of-the-art dosing system for modern reef tanks. The system is simple and intuitive and can be individually adapted to the needs of your aquarium.
With just two...
ION-B ALK/pH+ Powder (671g - Makes 3,000 mL) - NYOS
NYOS
$24.99
The Nyos® ION-B method is a state-of-the-art dosing system for modern reef tanks. The system is simple and intuitive and can be individually adapted to the needs of your aquarium.
With just two...
On Sale
10%
On Sale
10%
BioSpace Reactor 8-2 (8" x 21") Up to 500 Gallons - Bashsea
Bashsea
$599.99
$539.99
Elevate your aquarium’s ecosystem with the Bashsea BioSpace Reactor, the most effective biological filter currently available on the market. Engineered for the serious hobbyist, this reactor utilizes...
On Sale
10%
On Sale
10%
BioSpace Reactor 6-2 (6" x 21") Up to 225 Gallons - Bashsea
Bashsea
$399.99
$359.99
Elevate your aquarium’s ecosystem with the Bashsea BioSpace Reactor, the most effective biological filter currently available on the market. Engineered for the serious hobbyist, this reactor utilizes...
On Sale
10%
On Sale
10%
BioSpace Reactor 4-2 (4" x 21") Up to 110 Gallons - Bashsea
Bashsea
$219.99
$197.99
Elevate your aquarium’s ecosystem with the Bashsea BioSpace Reactor, the most effective biological filter currently available on the market. Engineered for the serious hobbyist, this reactor utilizes...
4" NOSOK Filter Sock No Sock Replacement Silencer Cup - VCA
VCA Vivid Creative
$44.95
Silence Your Sump and Simplify Your Maintenance Routine
Tired of the constant splashing and "gurgling" sounds coming from your filter socks? The VCA No-Sock 4-Inch Silencer is the ultimate solution...
Small-In-One Nomad Portable Traveling Aquarium (0.5 Gallon) - PNW Custom
PNW Custom
$349.99
0.5 Gallon Fully Sealed Traveling Aquarium
The world’s first fully sealed traveling aquarium.
The Small-In-One Nomad is a compact 0.5-gallon aquarium designed for safely transporting and displaying...
ReefControl Power 8 Deluxe w/Panel - Red Sea
Red Sea
$389.00
Get the best of both worlds with the ReefControl Power 8 Deluxe. This kit combines the 8-socket ReefBeat-controlled smart power center with the dedicated manual Control Panel 8, giving you the...
ReefControl Power 8 - Red Sea
Red Sea
$319.00
Welcome to the future of aquarium management. The ReefControl Power 8 is more than just a power strip; it's the brain of your operation, integrating seamlessly into the Red Sea ReefBeat ecosystem to...
ReefControl Pro Deluxe Kit Aquarium Controller - Red Sea
Red Sea
$699.00
The ReefControl Pro is the flagship smart controller for the Red Sea ReefBeat ecosystem. It acts as the central brain for all your monitoring and automation, allowing you to connect up to 7 ReefSense...
ReefControl Pro Aquarium Controller - Red Sea
Red Sea
$429.00
Take full command of your aquarium with the ReefControl Pro, the ultimate smart controller for the Red Sea ReefBeat ecosystem. Monitor up to 7 different ReefSense digital probes, automate your...
ReefControl Lite Aquarium Controller - Red Sea
Red Sea
$329.00
The ReefControl Lite is your essential smart controller for staying on top of your aquarium's most critical parameters. Monitor a wide range of ReefSense digital probes, receive real-time...
LRS Premium Green Nori (20 Half Sheets / 1 oz) (Porphyra yezoensis) Seaweed - LRS Foods
LRS
$9.99
Give Your Fish the Purest, Most Nutritious Seaweed on the Market!
20x 1/2 Sheets 7.5" x 4"
Introducing LRS Premium Green Seaweed, the superior choice for discerning aquarists who demand the best...