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
 
  • EcoTech Marine Radion Tank Mount EcoTech Marine Radion Tank Mount
  • Innovative Marine Gourmet Gadgets Innovative Marine Gourmet Gadgets
  • Neptune Systems AquaController Neptune Systems AquaController
  • Vertex RX-U Reactor Vertex RX-U Reactor
  • AquaMaxx WS-1 In-Sump Protein Skimmer AquaMaxx WS-1 In-Sump Protein Skimmer
Mr. Aqua Exquisite 22 Gallon Frameless Glass Aquarium
00:00:00
Deal of the Day! Marine Depot Aquarium Pro Refractometer
Reg.
$64.99
On Sale
$55.24

Saltwater Aquarium Supplies and Accessories

Popular Brands

Top Selling Aquarium Supply Brands Innovative Marine EcoTech Marine JBJ AquaticLife Red Sea Tunze Eheim Neptune Systems Ecoxotic Hydor Aquarium Pharmaceuticals API Two Little Fishies Digital Aquatics Kent Marine AquaMaxx SeaChem Coralife Kessil
Why Shop at MarineDepot.com?

Marine Depot sells aquarium supplies, nutrition and supplements to help you create and maintain a successful fish tank. We carry over 7,000 popular and hard-to-find saltwater aquarium fish supplies and freshwater aquarium supplies from top brands like Red Sea, JBJ, Hydor and EcoTech Marine. We are located in Garden Grove, CA and have shipped more than one million orders to over a half-million aquarium lovers since 1998.

Browse our online store and take advantage of our powerful site search to find the latest and greatest aquarium technology on the planet. We carry energy-efficient LED aquarium lighting and all sorts of aquarium filters, from a refugium to grow copepods and chaetomorpha to just about every type of protein skimmer on the market. We specialize in the sale of reef aquarium and saltwater aquarium supplies, so if you are shopping for saltwater fish food or T5 lighting to grow your coral to new heights, you've come to the right place. We have high-end Ecotech Radion light fixtures, Neptune Apex controllers as well as more affordable Hydor Koralia pumps.

There are plenty of reasons why you should shop at Marine Depot for your fish aquarium supplies online. All of our fish tank supplies are backed by a 60-day return policy. We also offer a Low Price Guarantee on all in-stock merchandise. 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! We have incredibly fast shipping—so fast, in fact, that 99% of orders placed before 6PM EST ship the same day. And, orders over $175 ship for free! We offer new Marine Depot coupon codes every month and offer deep discounts on saltwater fish supplies and planted aquarium supplies to our email newsletter subscribers. Our customer support staff, The Reef Squad, are aquarium experts who can offer you free technical support or sales advice via telephone, email and Live Chat. They can share what the most popular fish tank supplies are for your reef tank and help guide you, step-by-step, through the installation of new equipment. We love what we do and are more than happy to share our knowledge with you. We firmly believe our company is the most reputable dealer of discount aquarium supplies on the web. Our aquarium store has an A+ rating with the Better Business Bureau, the Customer Certified designation on BizRate and we are an Elite Member of ResellerRatings. Customer satisfaction is our #1 priority! We invite you to experience the MarineDepot.com difference today.

Email Specials
Subscribe to our newsletter feed.
Newsletter Tips & Tricks! New Products!
Discounts & Promos!
Testimonials
May 6, 2015
"First of all, the employees know their products and this makes a great service. Second they have good website: informative, easy to navigate and good information and videos. This makes it a good place for all kinds of people in the hobby."
Miguelo

May 5, 2015
"Good selection. I've found sizes other stores don't offer. The shipping prices are very reasonable. I save by shopping here. Very satisfied. Thank you."
Seaecho

May 5, 2015
"Being local means I usually receive my shipments the next day, regardless of the shipping type selected. MD maintains my purchase history, so even if I don't know the type of bulbs I need, or replacement parts, they have what I purchased previously on file."
Surftim

WIN A $195 RO/DI SYSTEM! Sign up for our best deals, expert tips and a chance to win a RO Junior w/ Dual DI System!