1-800-566-3474
Live Chat Support
    Free Shipping On $175+
  • FREE Shipping On $175+
  • 14-Day Low Price Guarantee
  • 14-Day Low Price Guarantee
  • Same Day Shipping
  • Same Day Shipping
FREE Shipping on
Orders Over $175
Standard ground shipping (1-7 business days) starts at a low $5.99 and most orders over $175 ship FREE. Learn More
 
If you find a product we sell for a lower price at another online store, we will match their price—today and up to 14 days after you've purchased the item! Learn More
 
Same Day Shipping
We promise to ship your order as fast as humanly possible. In fact, 99% of orders placed before 6 pm EST ship the same day! Learn More
 
Search Results for Saltwater Aquarium Supplies
Show: per page
Grid View Grid List View List
Sort by:
76 - 100 of 518
SpectraPure® MaxCap DI Cartridge

SpectraPure® MaxCap DI Cartridge

DI-MC-10 SpectraPure’s MAXCAP® DI™ Replacement Cartridge is the Heart of the MAXCAP® Series of Products. When placed ahead of your existing DI cartridge, the life of your downstream DI cartridges will increase by four times or...

$29.99
Prodibio BIO DIGEST

Prodibio BIO DIGEST

BIO DIGEST is a hyper-concentrated bacterial compound that satisfies two functions: Installing biological filtration and digesting aquarium waste. Packaging the ampoules under nitrogen allows for very long conservation and makes ...

From $18.99
Caribsea Arag-Alive Special Grade Reef Sand

Caribsea Arag-Alive Special Grade Reef Sand

CaribSea’s Arag-Alive!™ Only CaribSea’s Arag-Alive!™ Live Sands contains not just the broad spectrum of marine bacteria found in the ocean, but additional specially selected strains of marine bacteria as well. Arag-Alive!™ comp...

From $21.99
Innovative Marine AUQA Gadget CustomCaddy - Media Basket

Innovative Marine AUQA Gadget CustomCaddy - Media Basket

Customize your mechanical, chemical, and biological filter media or convert to a living refugium with our larger and more robust CustomCaddy media baskets. Choose between your favorite filter pads, activated carbon, ion exchange r...

From $25.00
Gate Valve - Slip X Slip

Gate Valve - Slip X Slip

Gate Valve - 1/2 inch Slip X 1/2 inch Slip **Variations of this product can be found in many online stores. The version we carry is of the highest quality. Although this item is eligible for price matching under our Low Pr...

From $17.99
Seachem Laboratories Reef Plus

Seachem Laboratories Reef Plus

SeaChem Reef Plus ™ is a full spectrum reef supplement containing trace elements, vitamins, and amino acids demonstrated to have a positive impact on the growth of corals and other desirable reef creatures. Reef Plus™ is formulate...

From $6.49
E.S.V. B-Ionic Seawater System Salt Mix w/ Measuring Supplies

E.S.V. B-Ionic Seawater System Salt Mix w/ Measuring Supplies

E.S.V. B-Ionic Seawater System Salt Mix - Makes 25 Gallons of Saltwater A unique solution to many of the problems associated with all dry synthetic seawater blends. Problem: All dry blends may not be homogenous resulting in c...

From $37.99
BrightWell Aquatics NeoMarine Salt Mix

BrightWell Aquatics NeoMarine Salt Mix

Salt Mix Bucket makes 50 gallons of saltwater You asked for it. We delivered it. Formulated from natural seawater chemistry Mixes to 1.025 g/cm 3 Composed of ACS-and USP-grade ingredients Extensively tested for ove...

From $26.99
Red Sea Reef Foundation Pro Ca/Alk/Mg Multi Test Kit

Red Sea Reef Foundation Pro Ca/Alk/Mg Multi Test Kit

Red Sea`s Reef Foundation Kit includes high accuracy titration tests for the accurate measurement of the elements calcium, magnesium and alkalinity (KH) which are the basic foundation elements of coral skeletons. All of these elem...

$64.99 $49.99
Seachem Laboratories Matrix Carbon

Seachem Laboratories Matrix Carbon

SeaChem MatrixCarbon is a truly unique activated carbon, bead shaped for optimal hydrodynamics. This provides maximum water flow and contact with a high density of adsorptive sites without the compacting common to granular activat...

From $10.99
Marine Depot Aquarium Refractometer

Marine Depot Aquarium Refractometer

The Refractometer is a must have for all aquarium hobbyists. The proper salinity is crucial for the survival and health of your fish and corals . This high quality refractometer is extremely accurate and easy to use and calibr...

$49.99
AquaticLife Color Changing Mixed Bed Resin DI Cartridge for RO Buddie Reverse Osmosis System

AquaticLife Color Changing Mixed Bed Resin DI Cartridge for RO Buddie Reverse Osmosis System

Color Changing Mixed Bed Resin DI Cartridge upgrade for the AquaticLife RO Buddie Reverse Osmosis System. With the addition of this filter you can turn your RO Buddie into an RO/DI system that will produce pure, zero TDS water. ...

From $24.99
ASM replacement Needle Wheel Impellers

ASM replacement Needle Wheel Impellers

Replacement Needle Wheel Impeller for the G-300 used on the ASM Mini-G skimmer

From $20.99
AquaIllumination EXT Rail for Sol / Vega LED Fixtures

AquaIllumination EXT Rail for Sol / Vega LED Fixtures

Features The EXT Rail System continues AI`s industry-leading core of modularity and elegant design. Mount single or multiple AI modules over your tank, the EXT provides a sleek and complete mounting solution. With the option t...

From $24.99
65W Power Compact Bulb - Straight Pin

65W Power Compact Bulb - Straight Pin

UVL 65W Actinic White PowerCompact Bulb - Straight Pin Bulb Replacement Guide Bulb Types Life of Bulb* Normal Output Fluorescent 6-12 months Very High Out...

From $23.99
Gate Valve - FPT X FPT

Gate Valve - FPT X FPT

Gate Valve - 1/2 inch FPT X 1/2 inch FPT **Variations of this product can be found in many online stores. The version we carry is of the highest quality. Although this item is eligible for price matching under our Low Pric...

From $17.99
Algae Free Algae Magnets

Algae Free Algae Magnets

New and Revolutionary Cleaning Magnets! These are the strongest floating aquarium algae cleaning magnets available that are safe for glass and acrylic aquariums.  The inner cleaning assembly is made of high quality injected m...

From $43.99
Seachem Laboratories Reef Advantage Magnesium

Seachem Laboratories Reef Advantage Magnesium

SeaChem Reef Advantage Magnesium ™ is a concentrated (80,000 ppm) optimized blend of magnesium, chloride, and sulfate salts designed to restore depleted levels of magnesium with minimal impact to the ionic ratios found in natural ...

From $5.49
Ecoxotic Panorama Pro 2.0 LED Module

Ecoxotic Panorama Pro 2.0 LED Module

Seamless Integration Panorama Pro LED Module We have learned a lot from our first generation of Panorama LED lights and the next generation of Panorama Pro LED modules is proof. With a new sleeker profile, connectable design and ...

From $39.19
D-D Giesemann Powerchrome Midday T5 High Output Fluorescent Lamp

D-D Giesemann Powerchrome Midday T5 High Output Fluorescent Lamp

The D-D Midday 6000 T5 bulbs have full a 5 point colour spectrum and 6000K colour temperature which exactly recreates natural sunlight. Suitable for salt water and fresh water. Midday is a 6000 Kelvin tube with a 5 point spectrum...

From $18.99
HM Digital Dual Inline TDS Meter

HM Digital Dual Inline TDS Meter

The Dual TDS meter offers an easy and convenient way of monitoring the performance of your RO or RO/DI unit. It allows you to quickly check the quality of the inlet and outlet water and helps you to determine when the cartridges n...

$29.99
Caribsea Ocean Direct Live Sand Oolite

Caribsea Ocean Direct Live Sand Oolite

All New Ocean Direct™ Live Sand Simply Natural – Enjoy this real Caribbean live sand in a breathable bag with no added chemicals or special processing. Simply Effective – Ocean Direct™ is different than all other live sand prod...

From $17.99
Swing Check Valve - FPT x FPT

Swing Check Valve - FPT x FPT

Part #: FT9033 Description: 1/2" Clear FPT Swing Check Valve Size: 1/2" FPT x 1/2" FPT Designed to be used any place where you want to stop backflow and siphoning. These are among the highest quality check val...

From $20.99
CaribSea Dry Aragonite Special Grade Reef Sand

CaribSea Dry Aragonite Special Grade Reef Sand

1.25–1.95 mm diameter grain size. A revolution in reef-keeping! This is the one you’ve been reading about in all the hobbyist publications. This grade of aragonite is specifically engineered for plenum-type nitrate reducing beds o...

From $26.49
Seachem Laboratories Freshwater and Marine Stability

Seachem Laboratories Freshwater and Marine Stability

Seachem Stability 500 ml Stability™ will rapidly and safely establish the aquarium biofilter in freshwater and marine systems, thereby preventing the #1 cause of fish death: "new tank syndrome". Stability™ is formulated specifi...

From $13.99
76 - 100 of 518
This item is temporarily unavailable but will be back in stock soon.

Item #
Price:
Click the Add To Cart button below if you'd like to reserve this item today. Any other items included in your order will be immediately processed and shipped. We will ship this item separately as soon as it arrives. We will not charge you for this item until it ships and you will incur no additional shipping charges.

Enter your email address in the field below and click the Notify Me button if you'd like us to send you an email when this item becomes available. Although you will be immediately notified when we have stock on hand, we will not reserve any units for you; you must return to our website and place an order.

Your Email:
Just enter your email address below and we'll let you
know when the product you are looking for becomes available!

Item Code:
Price:
Your Email:
Save Money Get our best deals, product how-tos and expert tips delivered weekly to your inbox.