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Products (130)
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HYDROS 9' Sense Accessory Extension Cable
Hydros$12.12This 9ft long extension cable for HYDROS Sense Accessories for Control 2 and Control 4. -
HYDROS 9' Drive Accessory Extension Cable
Hydros$12.12This 9ft long extension cable for HYDROS Drive Accessories for Control 2 and Control 4. -
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HYDROS Rope Leak Sensor Mounting Clips (10 pack)
Hydros$5.7610 pack of installation clips for the HYDROS Rope Leak Detector Easily and securely mount the flexible HYDROS Rope Leak Detection Sensor to most surfaces to better sense the presence of moisture... -
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CoralVue HYDROS 1' One Foot System Command Bus Cable (DATA+Power)
Hydros$7.50This 1 foot long HYDROS System Command Bus Cable allows HYDROS devices to communicate and even provide power to the Control 2 and Control 4. -
CoralVue HYDROS 14' Fourteen Foot System Command Bus Cable (DATA+Power)
Hydros$24.24This 14 foot long HYDROS System Command Bus Cable allows HYDROS devices to communicate and even provide power to the Control 2 and Control 4. -
CoralVue HYDROS 6' Six Foot System Command Bus Cable (DATA+Power)
Hydros$12.12This 6 foott long HYDROS System Command Bus Cable allows HYDROS devices to communicate and even provide power to the Control 2 and Control 4. -
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Hydros Pump Adapter Cable - IceCap Gyre WE Pump Adapter
Hydros$14.43Direct Pump Driver - For IceCap Gyre WE pumps the HYDROS WaveEngine connects directly to the pump head. This removes the clutter of the power brick and the control head for these pumps. -
HYDROS WaveEngine LE Pump Controller - Coralvue
Hydros$248.31The WaveEngine LE allows you to easily add different brand pumps to your aquarium to obtain the ultimate flow. Specify the minimum and maximum speed each pump can run while working together in... -
Hydros Pump Adapter Cable - TUNZE 0-10V Pump Adapter
Hydros$17.89Direct Pump Driver - For TUNZE 0-10V pumps the HYDROS WaveEngine connects directly to the pump head. This removes the clutter of the power brick and the control head for these pumps. -
HYDROS Duet: The Ultimate Super-Duty Dosing, Water Change & Control Hybrid
Hydros$799.99HYDROS Duet: The Ultimate Super-Duty Dosing & Control Hybrid Take total control of your aquarium’s most demanding liquid management tasks with the HYDROS Duet. Engineered for hobbyists who demand... -
On Sale 10%
On Sale 10%Hydros Pump Adapter Cable - 10V Quad WE Pump Adapter & Ind Aquatics Frozen Feeder
Hydros$15.58$14.02Direct Pump Driver - For 10V Quad WE pumps the HYDROS WaveEngine connects directly to the pump head. This removes the clutter of the power brick and the control head for these pumps. Also used to... -
Hydros Pump Adapter Cable - Reef Octopus Varios / Pulse WE Pump Adapter
Hydros$14.43Direct Pump Driver - For Reef Octopus Varios / Pulse WE pumps the HYDROS WaveEngine connects directly to the pump head. This removes the clutter of the power brick and the control head for these... -
Hydros Pump Adapter Cable - Maxspect Gyre 330/350 WE Pump Adapter
Hydros$14.43Direct Pump Driver - For Maxspect Gyre 330/350 WE Pumps the HYDROS WaveEngine connects directly to the pump head. This removes the clutter of the power brick and the control head for these pumps. -
Hydros Pump Adapter Cable - Third Party Controller WE Pump Adapter
Hydros$15.58Direct Pump Driver - For Third Party Controller WE Pumps the HYDROS WaveEngine connects directly to the pump head. This removes the clutter of the power brick and the control head for these pumps. -
Hydros Pump Adapter Cable - Maxspect Gyre 130/230 WE Pump Adapter
Hydros$14.43Direct Pump Driver - For Maxspect Gyre 130/230 WE pumps the HYDROS WaveEngine connects directly to the pump head. This removes the clutter of the power brick and the control head for these pumps. -
Hydros Pump Adapter Cable - Maxspect Gyre 150/250/280 WE Pump Adapter
Hydros$14.43Direct Pump Driver - For Maxspect Gyre 150/250/280 WE pumps the HYDROS WaveEngine connects directly to the pump head. This removes the clutter of the power brick and the control head for these pumps. -
On Sale 15%
On Sale 15%MPO Duo Magnetic 2 Probe Organizer (Apex, Hydros, PH, etc) - AvidAqua
AvidAqua$39.95$33.96Since they first hit the market, there have not been significant improvements in magnetic probe holder designs. The MPO Duo Magnetic Probe Organizer changes that with innovative new features... -
On Sale 15%
On Sale 15%MPO Quattro Magnetic 4 Probe Organizer (Apex, Hydros, PH, etc) - AvidAqua
AvidAqua$44.95$38.21Since they first hit the market, there have not been significant improvements in magnetic probe holder designs. The MPO Quattro Magnetic Probe Organizer changes that with innovative new features... -
Ready-to-Use Alkalinity Testing Machine 0.02N Reagent (500 ml) - Coralvue
Coralvue$15.99Get accurate alkalinity test results without the hassle of preparing your own reagent. CoralVue's pre-prepared 0.02N reagent is perfect for the HYDROS and Focustronic Alkatronic testing machines... -
On Sale 15%
On Sale 15%PNS ProBio (16 oz) Live Bacteria - Hydrospace
Hydrospace$27.99$23.79PNS Probio Live purple non-sulfur bacteria (Rhodopseudomonas palustris): Live Food for Coral high in protein and vitamin B12 Removes Ammonia. Removes Phosphates. Free Swimming... -
On Sale 15%
On Sale 15%PNS HomeGro (2.5 gal) - Hydrospace
Hydrospace$145.99$124.09Provide superior nutrition, while controlling nutrients and organic wastes, with purple nonsulfur bacteria. -
On Sale 15%
On Sale 15%PNS Deep Cycle (16 oz) Live Bacteria - Hydrospace
Hydrospace$33.99$28.89A Functional Cohort of -
On Sale 15%
On Sale 15%PNS ProBio (1 Gallon) Live Bacteria - Hydrospace
Hydrospace$148.00$125.80PNS Probio Live purple non-sulfur bacteria (Rhodopseudomonas palustris): Live Food for Coral high in protein and vitamin B12 Removes Ammonia. Removes Phosphates. Free Swimming... -
On Sale 15%
On Sale 15%PNS Deep Cycle (1 Gallon) Live Bacteria - Hydrospace
Hydrospace$249.99$212.49A Functional Cohort of -
On Sale 30%
On Sale 30%4K Gyre Flow Pump With WaveEngine LE Controller - Icecap
Icecap$381.14$266.80The IceCap 4K Gyre Flow Pump is not only more powerful than its predecessor, it now comes with the powerful HYDROS WaveEngine Light WiFi controllable controller, allowing you to fine-tune your flow... -
On Sale 15%
On Sale 15%PNS Yello Sno (16 oz) Coral & Invert Food - Hydrospace
Hydrospace$33.99$28.89YelloSno is the best delivery system of vitamin B12 through food where dosing of B12 as a supplement alone cannot be simply absorbed. Organics bonded with bacteria offering a just slightly... -
Hydrometer - Tropic Marin
Tropic Marin$41.99NOTE: The specific gravity is temperature dependent. With increasing temperature the specific gravity decreases. Therefore, the measured water temperature should be 25 °C / 77 °F to obtain a correct... -
On Sale 15%
On Sale 15%HydroCarbon (1 Liter) - Two Little Fishies
Two Little Fishies$21.26$18.07Granular activated carbon designed specifically for water purification. Removes dissolved organic compounds that turn the water yellow. The extremely porous granules are the optimum size for use in... -
Hydrofill Ti - ATO Controller - Innovative Marine
Innovative Marine$93.00HydroFill Ti – ATO Controller Automate freshwater replenishment, and say farewell to heavy lifting, unstable water parameters, and the need to frequently watch your water line. Topping off... -
HydroTote Collapsible Water Jug - 5 Gallon - Seachem
Seachem$12.97The HydroTote is a collapsible jug that holds up to 20 L (5 gallons). It's perfect for customers that get their saltwater, RO water, or DI water at their local fish store. When not in use, it easily... -
Hydrofill 5 Gallon TI ATO Reservoir - Innovative Marine
Innovative Marine$172.00The Hydrofill Ti Reservoir is the next generation auto top off gadget that simplifies tasks involved for evaporated makeup water. The smart design offers 5 gallons of storage capacity and a mere (7... -
On Sale 15%
On Sale 15%Kalkwasser Powder Calcium Hydroxide (3.5 lbs) - ESV
ESV$29.99$25.49Maintain a thriving reef ecosystem with the purity of ESV Kalkwasser. A cornerstone of marine aquarium care for decades, Calcium Hydroxide is a proven, economical method for maintaining both calcium...
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...
On Sale
15%
On Sale
15%
7" NOSOK Filter Sock No Sock Replacement Silencer Cup - VCA
VCA Vivid Creative
$74.95
$63.71
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
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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...
On Sale
15%
On Sale
15%
4" NOSOK Filter Sock No Sock Replacement Silencer Cup - VCA
VCA Vivid Creative
$44.95
$38.21
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...
On Sale
15%
On Sale
15%
Small-In-One Nomad Portable Traveling Aquarium (0.5 Gallon) - PNW Custom
PNW Custom
$349.99
$297.49
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...
On Sale
15%
On Sale
15%
MEGA Filtra 950 SDC Aquarium Canister Filter Up to 250 Gal (568 gph) - Sicce
Sicce
$499.99
$424.99
Experience the next generation of aquarium filtration with the Sicce Mega Filtra Series. Entirely designed and manufactured in Italy, these premium canister filters combine heavy-duty
On Sale
15%
On Sale
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MEGA Filtra 900 Aquarium Canister Filter Up to 240 Gal (410 gph) - Sicce
Sicce
$349.99
$297.49
Experience the next generation of aquarium filtration with the Sicce Mega Filtra Series. Entirely designed and manufactured in Italy, these premium canister filters combine heavy
On Sale
15%
On Sale
15%
MEGA Filtra 650 Aquarium Canister Filter Up to 170 Gal (380 gph) - Sicce
Sicce
$299.99
$254.99
Experience the next generation of aquarium filtration with the Sicce Mega Filtra Series. Entirely designed and manufactured in Italy, these premium canister filters combine heavy
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...