Large Selection of Aquarium Supplies near Silver Spring, MD

Congressional Aquarium, Inc. carries a huge selection of rare freshwater and saltwater fish, aquatic plants, and aquarium supplies in Rockville, MD. Whether you're new to the hobby, or an advanced aquarist looking to setup a beautiful reef ecosystem, we are the shop for you.

Experienced & Friendly Advice
Knowledgeable employees are always ready to offer expert advice on which species do well together, as well as to help out with fish diseases, water quality issues, equipment questions, or any other problems that may arise. A color dot system gives an at-a-glance look at fish compatibility.

Aquarium supplies in Silver Spring, MD
Congressional Aquarium

50% OFF
(1) Frozen Food Item!

This coupon is good for the percentage off regularly priced items only. Offer applies to total qualifying purchase on a single sales receipt for the date specified.
Not good in combination with any other coupons or offers.

Expires: 12/31/2015

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We're Hobbyists, Too!
Members of our staff have been working in this industry for many years, some as long as 45 years! We are not just employees, we're enthusiasts and share our customers' love for the aquarium hobby.

Aquariums & Tanks
We stock a number of different tanks, ranging from 1 to 125 gallons. Hard-to-find shapes and larger sizes are easily special-ordered and typically arrive within a week. To search for specific products please visit our wholesalers websites at Central Pet Distribution and Royal Pet Supplies.

Any equipment bought with the tank are 20% off, including decorations, filters, hoods, and lights! We are always ready to arrange for delivery, setup or maintenance of any size tank. 


Contact us today to learn more about our fantastic array of fish, plants, and supplies.

Hours of Operation: Monday – Saturday, 10:00 a.m. – 9:00 p.m. • Sunday, 11:00 a.m. – 6:00 p.m.