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
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
Search Results for »
Show: per page
Grid View Grid List View List
Sort by:
Seachem Laboratories Reef Buffer

Seachem 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 $18.99
Seachem Laboratories Reef Builder

Seachem Laboratories Reef Builder

Seachem Reef Builder ™ raises carbonate alkalinity without immediately impacting on pH. With long term use there will be a tendency to stabilize at pH 8.3. Carbonates and calcium are essential to all coral growth. If either become...

From $6.49
Seachem Laboratories Reef Advantage Calcium

Seachem Laboratories Reef Advantage Calcium

Seachem Reef Advantage Calcium ™ is equivalent to dry Reef Complete™. It is a non-caustic (pH 8.3-8.6) optimized blend of ionic calcium designed to restore and maintain calcium to levels found in natural seawater. Calcium and carb...

From $7.49
Seachem Laboratories Matrix Carbon

Seachem Laboratories Matrix Carbon

SeaChem MatrixCarbon is a truly unique activated carbon, bead shaped for optimal hydrodynamics. This provides maximum water flow and contact with a high density of adsorptive sites without the compacting common to granular activat...

From $10.99
Seachem Laboratories Purigen

Seachem Laboratories Purigen

SeaChem Purigen is a premium synthetic adsorbent that is unlike any other filtration product. It is not a mixture of ion exchangers or adsorbents, but a unique macro-porous synthetic polymer that removes soluble and insoluble impu...

From $8.49
Seachem Laboratories PhosGuard

Seachem Laboratories PhosGuard

PhosGuard is a high capacity and high efficiency filtration product for removing phosphates and silicates from marine or fresh water aquaria. Unlike competing products, PhosGuard is bead-shaped for optimum flow characteristics and...

From $5.99
Seachem Laboratories Prime

Seachem Laboratories Prime

Seachem Prime™ is the complete and concentrated conditioner for both fresh and salt water. Prime™ removes chlorine, chloramine and ammonia. Prime™ converts ammonia into a safe, non-toxic form that is readily removed by the tank’s ...

From $7.99
Seachem Laboratories Freshwater and Marine Stability

Seachem Laboratories Freshwater and Marine Stability

Seachem Stability 500 ml Stability™ will rapidly and safely establish the aquarium biofilter in freshwater and marine systems, thereby preventing the #1 cause of fish death: "new tank syndrome". Stability™ is formulated specifi...

From $13.99
Seachem Laboratories ParaGuard

Seachem Laboratories ParaGuard

SeaChem ParaGuard ™ is the only fish and filter safe aldehyde based (10% by weight) parasite control product available. Unlike highly toxic and difficult to use formalin based medications, ParaGuard™ contains no formaldehyde or me...

From $5.49
Seachem Laboratories Reef Salt

Seachem Laboratories Reef Salt

Makes 50 Gallons of Saltwater Seachem’s Reef Salt™ is a chemically sound blend of salts designed to replicate natural reef waters. It is specifically formulated for the reef environment and will provide ideal seawater concent...

From $22.99
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 $6.49
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 $14.99
Seachem Laboratories Reef Status: Strontium Test Kit

Seachem Laboratories Reef Status: Strontium Test Kit

SeaChem Reef Status Strontium Test Kit This kit measures strontium by first seperating the strontium in the sample by a chemical precipitation and filtration, followed by a sensitive titration in 0.5 mg/L increments. Now use...

$45.99
Seachem Laboratories Liquid Marine Buffer

Seachem Laboratories Liquid Marine Buffer

Adjusts and maintains pH to 8.3. Works with all types of filtration and will not disrupt the natural ionic balance of your aquarium. Will not cloud water. Excellent for marine, brackish, or alkaline freshwater use. 250 gram powder...

From $59.99
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.