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  • FREE Shipping On $75+
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Standard ground shipping (1-7 business days) starts at a low $4.99 and most orders over $75 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
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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
  • Hydra HD Hydra HD
  • Korallin-Zucht Korallin-Zucht
  • Maxspect Razor R420R 15000K LED Light Fixture AquaMaxx ROX 0.8 Carbon Filter Media
  • Doctor Eco Systems Eggs
  • World's Smartest Return Pump World's Smartest Return Pump
10% Off Maxspect Gyre Pump

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

Marine Depot sells aquarium supplies, nutrition and supplements to help you create and maintain a successful fish tank. We carry over 5,000 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 to ensure you always pay the lowest amount when you shop with us. We have incredibly fast shipping—so fast, in fact, that 99% of orders placed before 6PM EST ship the same day. And, orders over $75 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. Customer satisfaction is our #1 priority! We invite you to experience the difference today.

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September 28, 2015
"Marine Depot has everything you might need for the saltwater hobby."

September 28, 2015
"Pricing & availability of product is great. This is where I buy from when I know what I want & want it quickly."

September 27, 2015
"Your reputation in the industry is rock solid. I enjoy and have learned from your videos."

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