Great Aquariums Start Here
1-800-566-3474
    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
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
14-Day Low Price Guarantee
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
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
Show: per page
Grid View Grid List View List
Sort by:
51 - 75 of 287
Kent Marine Superbuffer dKH

Kent Marine Superbuffer dKH

Description : Kent Superbuffer-dKH is a specially formulated pH buffer and alkalinity or carbonate hardness (KH) builder, designed to adjust the pH of saltwater aquariums to the range of 8.0 to 8.3 and build the KH. Superbuffer-d...

From $6.49
Aqua Vision Aquatics Precision Integreat (Part B Buffer)

Aqua Vision Aquatics Precision Integreat (Part B Buffer)

Precision Integrate Part B is a well-balanced supplement that is designed to raise and maintain KH/alkalinity levels as well as enhance coral growth. This product contains 10,600 KH or 3,800 meq/L and is one of the most concentrat...

From $7.99
Kent Marine Essential Elements

Kent Marine Essential Elements

Description: Kent Marine Essential Elements replaces biologically important trace minerals which are removed by marine fish and invertebrates, and removed through protein skimming, ozone, and especially carbon filtration. Design...

From $6.99
Evolution Aqua Pure Marine

Evolution Aqua Pure Marine

PURE Marine. Have you tried it yet? PURE Marine should be used regularly as part of your maintenance program to maintain the biological equilibrium inside your aquarium. PURE Marine can also be used to recover the bacterial bal...

From $19.99
Salifert Flatworm Exit

Salifert Flatworm Exit

Flatworm eXit itself is quite safe to fish and invertebrates. However, the body juice of flatworms can be toxic to some reef inhabitants when present in a too high concentration. This body juice is sometimes excreted when flatworm...

$19.49
Kent Marine Strontium & Molybdenum

Kent Marine Strontium & Molybdenum

Description: Strontium & Molybdenum Supplement provides bio-available strontium for lush growth of purple, pink and green calcareous algaes, snails, hard tube worms and clams. Magnesium is added to make up for deficiencies i...

From $7.99
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
Red Sea Reef Foundation A Supplement (Ca/Sr)

Red Sea Reef Foundation A Supplement (Ca/Sr)

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

From $15.99
Seachem Reef Fusion Two Part System 1 & 2 Calcium and Carbonate Supplement

Seachem Reef Fusion Two Part System 1 & 2 Calcium and Carbonate Supplement

Reef Fusion 1™ and Reef Fusion 2™ are the foundation of a system formulated to provide the essentials for the reef aquarium. Reef Fusion 1™ provides calcium, while Reef Fusion 2™ provides alkalinity. When used together, the Reef F...

From $14.38
Kent Marine Lugol`s Solution 1 oz.

Kent Marine Lugol`s Solution 1 oz.

Description: Kent Lugol`s Solution provides a strong source of free iodine and iodide to reef inhabitants and macroalgae. Although it’s very effective when used with stony corals, systems containing xenia and soft corals are par...

$11.49
Brightwell Aquatics Reef Biofuel Liquid

Brightwell Aquatics Reef Biofuel Liquid

Overview Helps maintain a balanced nutrient-limited marine aquarium by enabling the hobbyist to enhance the rate of microbial growth and reproduction, increasing the rate of phosphate-reduction and denitrification; this is o...

From $12.59
Ecosystem Aquarium Reef Solution

Ecosystem Aquarium Reef Solution

Reef Solution™ is the ideal all natural, multipurpose additive created for enhancing the marine aquarium environment. Outstanding results for both reef and fish only aquariums. In reef systems, polyp extensions on corals is phenom...

From $14.99
Brightwell Aquatics Alkalin8.3 Liquid pH Buffer

Brightwell Aquatics Alkalin8.3 Liquid pH Buffer

• Highly-effective alkalinity(KH)-increasing ("buffer") solution. • Helps increase pH stability in an aquarium by raising the alkalinity. • Provides a source of...

From $5.49
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
Seachem Laboratories Marine Buffer

Seachem Laboratories Marine Buffer

Seachem Marine Buffer is the original and still unique buffer with a pH of 8.3, designed to adjust pH to 8.3 and maintain both pH and alkalinity(KH). It is formulated not to disrupt the natural ionic balance of marine water with p...

From $5.99
Aquarium Pharmaceuticals API Quick Start

Aquarium Pharmaceuticals API Quick Start

In a new aquarium , harmful ammonia and nitrite build up from fish waste, often resulting in fish loss. The unique, patented nitrifying bacteria in API Quick Start are scientifically proven to quickly consume ammonia and nitrit...

From $8.99
Kent Marine Coral-Vite

Kent Marine Coral-Vite

Description: Kent Coral-Vite is the premium hard & soft coral vitamin & mineral supplement. It provides exotic trace minerals and complex nutrients for health and vigor and to stimulate growth in corals, anemones, gorgon...

From $9.99
Brightwell Aquatics Garlic Power

Brightwell Aquatics Garlic Power

Overview Delivers the nutritional benefits of raw garlic to fishes primarily by being applied to their food. Consists solely of preserved extract of raw garlic with a small amount of vitamin-C as a preservative. Does not r...

From $12.49
Seachem Laboratories Laboratories Reef Buffer

Seachem Laboratories Laboratories Reef Buffer

Seachem Reef Buffer ™ is intended primarily for use in a reef system where the maintenance of a pH of 8.3 is often difficult. When used as directed Reef Buffer™ will raise the pH of your reef system to 8.3 without fear of accident...

From $5.99
Red Sea Aiptasia-X Refill 14oz

Red Sea Aiptasia-X Refill 14oz

Red Sea Aiptasia-X In an exciting development for reef-keepers Red Sea has developed a unique patent pending formula to treat the pest anemones Aiptasia sp., Anemonia majano and Boloceroides sp. Affecting almost every reef aqua...

$38.88
Brightwell Aquatics Alkalin8.3-P Dry pH Buffer

Brightwell Aquatics Alkalin8.3-P Dry pH Buffer

• Highly-effective alkalinity-increasing ("buffer") powdered blend. • Helps increase pH stability in an aquarium by raising the alkalinity; continued addition raises pH until 8...

From $5.99
Kent Marine Super Iodide

Kent Marine Super Iodide

Description: Kent Marine Super Iodine Supplement provides bio-available iodine to reef inhabitants. Although present in salt mixes, iodine is rapidly used up in the system, and removed through protein skimming, ozone and filtrat...

From $6.49
Brightwell Aquatics Calcion Liquid Calcium

Brightwell Aquatics Calcion Liquid Calcium

• Highly-concentrated ionic calcium solution. • Increases the concentration of calcium in marine aquarium water to provide corals and other reef-building invertebrates with one of the most important e...

From $6.49
Continuum Aquatics Bacter Clean-M

Continuum Aquatics Bacter Clean-M

Bacter Clean•M is a unique marine microbial culture and enzyme product, unlike any other on the market. Features : Cleans live rock, live coral stone, tank walls, and other surfaces Loosens and cleans coatings and ugly acc...

From $6.59
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
51 - 75 of 287
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:
Marine Depot Newsletter Signup
Aquariums, News & Culture
Join 100,000+ readers who receive weekly tips, videos, deals and giveaways.