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Apex TRIDENT (Alk, Cal, Mag) Automatic Water Tester (With 2 Month Reagents) - Neptune Systems
Neptune Systems$699.99(Includes 2 Month Reagents) The Trident is an automated testing system that regularly tests alkalinity, calcium, and magnesium in your saltwater aquarium — and then communicates this information to... -
(DISCONTINUED) HC-820M Digital Heater Controller +Sensor - Finnex
Finnex$54.99The HC-820M Finnex heater controller uses an advanced digital processor that monitors and controls the water temperature in your aquarium. The heating controller receives temperature data from the... -
KR818 Kalkwasser Reactor GEN3 - RED - Geo's Reef
Geo's Reef$754.00*******THESE REACTORS ARE IN STOCK AND WILL SHIP SAME DAY NEXT DAY - NO NEED TO WAIT FOR THEM TO BE BUILT******* This is the latest model GEO Kalkwasser Reactor GEN3. We have made many changes over... -
MaxPure 4 Stage MPDI 90-GPD RODI System - (MPDI-90) - Spectrapure
Spectrapure$239.99MaxPureMPDI 90-GPD 4-Stage RO/DI System w/ std 90gpd RO membrane, 1um pre-filters, color-indicating SilicaBuster DI cartridge, pressure gauge, & hose adapter SpectraPure 90gpd MaxPure RODI System... -
MC 720 PH Dosing Kit Controller & Pump - Milwaukee Instruments
Milwaukee Instruments$395.75Control the pH of your tank/reservoir automatically! The MC122 pH controller and dosing pump (MP810) provides fully automated pH control of aqueous solutions in hydroponic systems. It has been... -
500 Watt Digital Titanium Heater - HMC-500S - Finnex
Finnex$69.99Engineered for Serious Aquatic Climate Stability Maintain a flawless, stable environment for your sensitive reef and marine setups with the Finnex HMC Titanium Aquarium Heater Series. -
Apex TRIDENT (Alk, Cal, Mag) Automatic Water Tester (With 6 Month Reagents) - Neptune Systems
Neptune Systems$759.99(Includes 6 Months of Reagents) The Trident is an automated testing system that regularly tests alkalinity, calcium, and magnesium in your saltwater aquarium — and then communicates this information... -
Juwel Rio 450 LED Aquarium and Cabinet Set - 119 Gallon - White
Juwel$2,999.98Juwel Rio 450 LED Aquarium and Cabinet Set - 119 Gallon - Classic White Realize your grandest aquatic visions with the Juwel Rio 450 LED, the largest aquarium in the acclaimed RIO range. Offering an... -
IceCap 36 Reef Sump V2 - IceCap
Icecap$604.99For Aquariums: 120-250 Gallons Footprint: 36in x 18in x 16in(LxWxH) Intake Drains: Three - 1.5in Filter Sock Holder: 7in Skimmer Section: 15.7in x 17.6in Return Pump Section: 7.9in x 17... -
Juwel Rio 450 LED Aquarium and Cabinet Set - 119 Gallon - Classic Black
Juwel$2,999.98Juwel Rio 450 LED Aquarium and Cabinet Set - 119 Gallon - Classic Black Realize your grandest aquatic visions with the Juwel Rio 450 LED, the largest aquarium in the acclaimed RIO range. Offering an... -
Juwel Rio 450 LED Aquarium and Cabinet Set - 119 Gallon - Light Wood
Juwel$2,999.98Juwel Rio 450 LED Aquarium and Cabinet Set - 119 Gallon - Classic Light Wood Realize your grandest aquatic visions with the Juwel Rio 450 LED, the largest aquarium in the acclaimed RIO range... -
SDAquarist Micro Algae Blend Concentrate (32 oz) - Reef Nutrition
Reef Nutrition$41.00A blend of the 6 most widely used marine microalgae for use with invertebrates: Isochrysis, Pavlova, Tetr -
INOUT Overflow and Return - Xaqua
Xaqua$98.99Complete overflow system complete with: anti-clogging and easily removable suction grid; directional water jet; hoses*. Rated for upwards of 660 gallons per hour! It can be installed in aquariums... -
SDAquarist Micro Algae Blend Concentrate (16 oz) - Reef Nutrition
Reef Nutrition$25.00A blend of the 6 most widely used marine microalgae for use with invertebrates: Isochrysis, Pavlova, Tetr -
K+ Elements Pro Coral Trace 1 (1000 ml) - Tropic Marin
Tropic Marin$35.99Tropic Marin® K+ Elements contains a selection of essential cationic trace elements for the promotion of growth and the natural coloring of the corals. Trace elements are natural minerals which are... -
INOUT Overflow and Return (freshwater) - Xaqua
Xaqua$98.99Complete overflow system complete with: anti-clogging and easily removable suction grid; directional water jet; hoses*. Rated for upwards of 660 gallons per hour! It can be installed in... -
SDAquarist Micro Algae Blend Concentrate (6 oz) - Reef Nutrition
Reef Nutrition$14.00A blend of the 6 most widely used marine microalgae for use with invertebrates: Isochrysis, Pavlova, Tetr -
A- Elements Pro Coral Trace 2 (1000 ml) - Tropic Marin
Tropic Marin$35.99Tropic Marin® A- Elements contains a selection of essential anionic trace elements for the promotion of growth and the natural coloring of the corals. Trace elements are natural minerals which are... -
IceCap 48 Reef Sump V2 - IceCap
Icecap$918.99For Aquariums: 250-350 Gallons Footprint: 48in x 22in x 16in(LxWxH) Intake Drains: Three - 1.5in Filter Sock Holder: Two - 7in Skimmer Section: 24.8in x 21.6in Return Pump Section: 9.8in x 21... -
AQUA FILTRA 40 Hang on Back Aquarium Filter - Sicce
Sicce$64.99Sicce AQUA FILTRA 40 Hang-On-Back Filter Silent, Powerful, and Crystal-Clear Filtration — Engineered in Italy! Experience the next level of aquarium filtration with the Sicce AQUA FILTRA 40. This... -
ReefDose Doser 4 Head Wireless Dosing Pump - Red Sea
Red Sea$449.00ReefDose is designed and built specifically for the daily supplementing of reef aquariums. ReefDose uses bespoke (patent-pending) single-drop-accuracy dosing heads together with an advanced... -
ReefDose Doser 2 Head Wireless Dosing Pump - Red Sea
Red Sea$289.00ReefDose is designed and built specifically for the daily supplementing of reef aquariums. ReefDose uses bespoke (patent-pending) single-drop-accuracy dosing heads together with an advanced... -
Eliminator RO 300GPD Reverse Osmosis Systems (ELIM-RO-300-MF) - Spectrapure
Spectrapure$283.99SpectraPure® Eliminator® Hydroponic RO Systems are specifically designed for hydroponic, vegetable and flower gardens. Purified water grows healthier, more beautiful and longer lasting plants than... -
Advanced Hang On Back Refugium Box PRO SERIES - Medium - Fiji Cube
Fiji Cube$259.99The Fiji Cube Advanced Hang On Back (HOB) Refugium Box PRO SERIES in Medium is a convenient and robust filtration solution designed to enhance the water quality and biological diversity of your... -
Tom's Aquatics - Aqua Lifter, Aqualifter Aquarium Suction Pump Drip/Dose
Tom's Aquatics$38.95This unique one-of-a-kind vacuum pump is designed to lift water with its diaphragm and flappers. There are many applications for this pump: drip system for reptile terrariums, watering device for... -
MiniMax Pro AIO Media Reactor (Midsize) - Innovative Marine
Innovative Marine$106.00MiniMax Pro Series - All-In-One Media Reactor - Midsize If you desire the highest water quality but are frustrated with media reactors on the market... Meet the all new MiniMax. The MiniMax... -
Media Reactor MR-30 GFO Carbon Pellets Includes Pump - Aquatop
Aquatop$104.99Maximize your aquarium's filtration potential with the Aquatop MR-30 Multimedia Reactor. This high-performance reactor is specifically engineered to eliminate "channeling"—a common issue where water... -
Eliminator RO 150GPD Reverse Osmosis Systems (ELIM-RO-150-MF) - Spectrapure
Spectrapure$248.99SpectraPure® Eliminator® Hydroponic RO Systems are specifically designed for hydroponic, vegetable and flower gardens. Purified water grows healthier, more beautiful and longer lasting plants than... -
Small-In-One Nomad Portable Traveling Aquarium (0.5 Gallon) - PNW Custom
PNW Custom$349.990.5 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... -
4-Head Dosing Pump - Simplicity
Simplicity$149.95The Simplicity Dosing Pump is an accurate, effective, and affordable liquid dosing solution. The four dosing heads offer high-precision liquid dosing combined with easy-to-use integrated controls... -
Media Reactor MR-20 GFO Carbon Pellets Includes Pump - Aquatop
Aquatop$71.99Maximize your aquarium’s clarity and health with the Aquatop MR-20 Multimedia Reactor. This compact, high-efficiency filtration system is designed to provide professional-grade water polishing for... -
Whale 500 Aquarium Canister Filter 80-135 Gal (390 gph) - Sicce
Sicce$229.99Sicce has been manufacturing industry-leading pumps for years. Recently, we challenged our engineers to develop a canister filter that offers exceptional value to customers without sacrificing... -
MiniMax Pro AIO Media Reactor (Desktop) - Innovative Marine
Innovative Marine$80.00MiniMax Pro Series - All-In-One Media Reactor - Desktop If you desire the highest water quality but are frustrated with media reactors on the market... Meet the all new MiniMax. The MiniMax... -
50-100 GPD - 4 Stage Inline RODI (Entry Level) SEA-RODI-100 - SaltwaterAquarium.com
SaltwaterAquarium$84.99This is what we consider the most basic budget level entry system. Our newbie 4-stage standard system is the most basic system you can buy to get started. Portable and Affordable! Great for... -
PhytoChrom -Coloring Enhancing Phytoplankton (500 ml) - Brightwell
Brightwell Aquatics$23.871 - 30µm Phytoplankton Suspension for Soft Corals, Clams, Sponges, and Other Filter-Feeders Overview Provides 6 types of phytoplankton ranging in size from1 - 30µm. Ideally-sized for many soft... -
PhytoGreen-M (250 ml) - Brightwell
Brightwell Aquatics$13.1310 - 15µm Phytoplankton Suspension for Soft Corals, Clams, Sponges, and Other Filter-Feeders Overview Provides phytoplankton ranging in size from 10 - 15µm. Ideally-sized for many soft corals,... -
PhytoGreen-S (500 ml) - Brightwell
Brightwell Aquatics$23.871 - 2µm Phytoplankton Suspension for Soft Corals, Clams, Sponges, and Other Filter-Feeders Overview Provides phytoplankton ranging in size from 1 - 2µm. Ideally-sized for many soft corals,... -
PhytoGreen-S (250 ml) - Brightwell
Brightwell Aquatics$13.131 - 2µm Phytoplankton Suspension for Soft Corals, Clams, Sponges, and Other Filter-Feeders Overview Provides phytoplankton ranging in size from 1 - 2µm. Ideally-sized for many soft corals,... -
Arrow Crab (Stenorhynchus seticornis) - Cleanup Crew
Clean Up Crews$18.99Appearance Arrow crabs have a medium golden brown body wi -
Advanced Hang On Back Refugium Box PRO SERIES - Large - Fiji Cube
Fiji Cube$299.99The Fiji Cube Advanced Hang On Back (HOB) Refugium Box PRO SERIES in Large is an excellent external filtration system designed to improve w
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...
Red Acan Colony WYSIWYG - SAQ Coral Farm
Saltwater Coral Farm
$129.99
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...
Gold Hammer Coral Colony WYSIWYG - SAQ Coral Farm
Saltwater Coral Farm
$239.99
Gold Hammer Coral 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.
Gold Hammer Coral Colony...
Rainbow Bounce Mushroom WYSIWYG - SAQ Coral Farm
Saltwater Coral Farm
$299.99
Rainbow Bounce Mushroom 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.
Rainbow Bounce Mushroom...
BioSpace Reactor 8-2 (8" x 21") Up to 500 Gallons - Bashsea
Bashsea
$599.99
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...
BioSpace Reactor 6-2 (6" x 21") Up to 225 Gallons - Bashsea
Bashsea
$399.99
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...
BioSpace Reactor 4-2 (4" x 21") Up to 110 Gallons - Bashsea
Bashsea
$219.99
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...