Great Aquariums Start Here
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:
101 - 125 of 370
AquaticLife 48 Inch 54W T5HO Bulb

AquaticLife 48 Inch 54W T5HO Bulb

AquaticLife T5 HO Lamp 420/460nm Dual Actinic Visible Hue: ACTINIC/BLUE Kelvin: 420/460nm Length (including pins): 45 3/4” Application: Freshwater, Marine Fish & Corals Ideal for: Acroporas (SPS), Anemones, Clams, Hard Cor...

From $17.99
Orca Laboratories Nitra-Guard Bio-Cubes V4

Orca Laboratories Nitra-Guard Bio-Cubes V4

Nitra-Guard BIO-Cubes V4 - 250mL (for aquariums 20-65 gallons) The world’s fastest & most effective carbohydrate based nitrate remover More economical & effective than any other product of it’s kind in the world…nothing ca...

From $16.99
Two Little Fishies C-Balance

Two Little Fishies C-Balance

TwoLittleFishies C-Balance 32 oz., a two-part liquid supplement designed to make replenishment of calcium and buffering capacity easy. C-Balance replenishes calcium and carbonate alkalinity with the correct ratio of both major and...

From $18.49
Red Sea Reef Foundation C Supplement (Mg)

Red Sea Reef Foundation C Supplement (Mg)

A magnesium complex for balanced formation of coral skeletons. Calcium, magnesium, strontium and carbonate are the basic foundation elements of coral skeletons. All of these elements need to be available in balanced proportions...

From $7.99
Oceanic 29 Gallon BioCube - Replacement 36 Watt Lamp

Oceanic 29 Gallon BioCube - Replacement 36 Watt Lamp

Maintain healthy inhabitants in your BioCube aquarium system. Proper lighting conditions are vital for the health of such photosynthetic organisms as corals, invertebrates and plants. Since lamp spectrum and intensity decline as b...

From $17.99
Marineland Black Diamond Carbon

Marineland Black Diamond Carbon

Black Diamond® Black Diamond Premium Activated Carbon eliminates discoloration, odors, and impurities...and keeps on doing it long after other carbons quit. Heat-activated bituminous coal-based Black Diamond granules are speci...

From $9.99
SpectraPure® SilicaBuster DI Cartridge - Color-Indicating - SuperDI (DI-SB-CI-10HC)

SpectraPure® SilicaBuster DI Cartridge - Color-Indicating - SuperDI (DI-SB-CI-10HC)

SpectraPure® SilicaBuster™ Super DI™ Multi-Layer De-Ionization Cartridges are fabricated with the highest grade custom-blended resins for ultra-pure water. They are capable of producing 18 meg ohm-cm resistivity water. They are th...

$29.99
Red Sea 55W Dual 10000K/Actinic PowerCompact Bulb

Red Sea 55W Dual 10000K/Actinic PowerCompact Bulb

Replacement Lamp for Red Sea Max Tank 20.75" L

$24.49
Double Threaded Bulkhead (Schedule 80, Heavy Duty)

Double Threaded Bulkhead (Schedule 80, Heavy Duty)

Double Threaded Bulkhead (Schedule 80, Heavy Duty) - 1/2" FPT X 1/2" FPT Hole Size Required: 1 3/8" **Variations of this product can be found in many online stores. The version we carry is of the highest quality. Although ...

From $11.99
Elos Aqua Test Kit - Magnesium

Elos Aqua Test Kit - Magnesium

ELOS AQUA TEST KIT- MAGNESIUM Magnesium (Mg) is present in a high quantity (1300-1350 ppm) in natural seawater. Contrary to its not only quantitative significance, this element was ignored as an important parameter of the marin...

$25.99
Flexible PVC Pipe 10 Feet Roll

Flexible PVC Pipe 10 Feet Roll

Flexible PVC can simplify your plumbing as it allows you to bend and curve around pumps, filters and other obstructions. It retains its large inside diameter and helps to avoid the need of elbows so that water flow is not impeded....

From $12.49
AlgaGen ReefPods Tisbe Live Aquacultured Copepods

AlgaGen ReefPods Tisbe Live Aquacultured Copepods

ReefPodsTM are the only truly tropical live copepod culture available on the market today. ReefPods™ Tisbe the most popular aquarium Pod -they consumes your aquarium’s wastes and detritus, reproduce well, and are food for a mult...

From $14.99
D-D Giesemann Powerchrome Pure Actinic T5 High Output Fluorescent Lamp

D-D Giesemann Powerchrome Pure Actinic T5 High Output Fluorescent Lamp

Recommended to be used to compliment Aquablue+, Midday 6000 or metal halide lighting on marine aquariums with its pure actinic spectrum. Suitable for salt water. A complete pure actinic bulb with all the power of the "T5" illumin...

From $26.99
Two Little Fishies Julian`s Thing Coral Feeding Tool

Two Little Fishies Julian`s Thing Coral Feeding Tool

Julian`s Thing is a NEW multi-purpose device. Use it for feeding corals, for feeding anemones, for feeding zoanthids, for feeding seahorses and other timid or slow moving fishes. Use it for applying solutions onto Aiptasia and man...

$29.99
Giesemann Actinic Blue T5HO Fluorescent Bulb

Giesemann Actinic Blue T5HO Fluorescent Bulb

Since most aquarium inhabitants live in seawater depths where the light is very blue, it is needed to simulate this natural living conditions in the aquarium. The Giesemann Actinic Blue has therefore been developed to enhance the ...

From $18.95
Hydra Aquatics Twist Water Flow Accelerators MPT

Hydra Aquatics Twist Water Flow Accelerators MPT

Twist Water Flow Accelerators 1/2 Inch MPT Vortex Nozzle for more random flow Increase Water Flow up to 400% High quality Durable ABS plastic construction Compact size and light weight Rotating water diverter for increa...

From $20.19
Spears Union Fitting - Slip Fitting

Spears Union Fitting - Slip Fitting

Spears® Schedule 40 PVC fitting designs combine years of proven experience with computer generated stress analysis to yield the optimum physical structure and performance for each fitting. Material reinforcement is uniformly place...

From $5.25
Kent Marine Liquid Calcium

Kent Marine Liquid Calcium

Description: Concentrated Liquid Calcium provides bio-available calcium for lush growth of purple, pink and green calcareous algaes, snails, hard tube worms and clams. Corals will open more and stay attached to their skeletons b...

From $7.99
Continuum AquaBlade-P Acrylic Safe Algae Scraper w/ Plastic Blade

Continuum AquaBlade-P Acrylic Safe Algae Scraper w/ Plastic Blade

AquaBlade•P Scraper SHORT with Acrylic Safe Plastic Blade Made in the USA! Compatibility built-in 100% Backwards compatible with previous units. AquaBlade scraper fits the old blades, AquaBlade blades fit the old scrap...

From $7.49
Two Little Fishies ReBorn Coarse Aragonite Calcium Reactor Media

Two Little Fishies ReBorn Coarse Aragonite Calcium Reactor Media

Reborn™ coarse aragonite media for calcium reactors, composed of fossil skeletons of reef building corals sustainably harvested from pristine sites in the Western Pacific. When dissolved, ReBorn replenishes calcium and carbonate a...

From $22.99
Ocean Nutrition Formula Two Cube

Ocean Nutrition Formula Two Cube

Extra algae with fresh seafoods make this a gourmet natural food for herbivorous marine and freshwater fishes. Developed by aquaculture biologists to duplicate a natural coral reef diet. This formula is excellent for Surgeonfish, ...

From $5.93
Caribsea Arag-Alive Bahamas Oolite

Caribsea Arag-Alive Bahamas Oolite

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 $23.64
AquaIllumination Classic Rail Kit

AquaIllumination Classic Rail Kit

Mounting your lights on your tank is easy with the Classic Mounting Rails. The rails rest on your tank or combined with the Classic Hanging Kit make it easy to suspend your lights. Our versatile Classic Mounting Rails allow you t...

From $29.99
PURA PhosLock GFO Phosphate Removal Media

PURA PhosLock GFO Phosphate Removal Media

Groundbreaking filtration media at the right price. For Reef, Marine, Planted, and Fresh Water aquaria! The PURA family of filtration media is formulated to reduce scum formation in fresh and marine aquaria. All PURA products ...

From $11.99
Lifegard Aquatics Little Time Or Temp

Lifegard Aquatics Little Time Or Temp

Digital clock/thermometer with illuminating light. Accurate measurement of aquarium water or room temperature in F or C. Lifegard Aquatics Little Time & Temp Digital Clock and Temperature Indicator with backlit display and ba...

$21.99
101 - 125 of 370
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:
Win a $100 Gift Card Sign up to get our best deals, expert tips and a chance to win $100 to spend at Marine Depot!