Special Offer: Receive one free item with any order. Simply add the item to your cart—once your order subtotal exceeds...

The New AI Prime 16HD shares the same cluster as the Hydra 32HD and Hydra 64HD. The new Prime will...

This 5" x 8" x 1" zippered neoprene pouch is great for safely storing Apogee meters, microCache devices, and sensors....

Fritz Super Sacks are premium quality refillable and reusable mesh bags suitable for most types of media - customize your...

The Finnex HMK Titanium Aquarium Heater Series Introducing the Finnex HMK Titanium Aquarium Heater - Elevate Your Aquatic World to...

Special Offer: Receive one free item with any order over $30.00. Simply add the item to your cart—once your order...

Two Little Fishies Little Reactor is the latest and smallest Two Little Fishies reactor. This 7" tall reactor is designed...

Submersible Aquarium Fluidized Bed Filter   • Tumble Aquarium Filter: - Imitates natural filtering, uses new material, cultivates bacteria, no...

50% OFF, these expire 6/2025, acutally probably good for another 6 months after that.   Silicate Test Silicate occurs especially...

Your Choice Aquatics Bio-Plate Filter Media - 2 Pack High Performance Bio Filter Media   Features - Increased Beneficial Bacteria...

The flows you chose Only you know what is best for your aquarium. Creating specific directional flow around sensitive corals,...

SAVE 60%- STILL GOOD TO USE- EXPIRE 10/25   Compete Diet for Marine Fish A special mix of Fauna Marin's...

Combining the Spectrum Nutrition Formula with additional, naturally occuring Beta Carotene for bright, vibrant reds and oranges in fish that...

  Most Impressive: More LEDs More PAR More Spread Improved Optic Design Improved Water Resistance Thinner Form Factor Dedicated Moonlight...

BRAND NEW EXPIRED, SAVE 60% - Factory sealed, expired dry food.  This expired on 2/2025, but it should still be...

BRAND NEW EXPIRED, SAVE 60% - Factory sealed, expired dry food.  This expired on 2/2025, but it should still be...

BRAND NEW EXPIRED, save 80% - Factory sealed, expired dry food.  This expired on 2/2025, but it should still be...

Please NOTE: Expired 06/2025 CaribSea Arag-Alive!" CaribSea has seven carefully selected Live Sand products to help you create the authentic...

CaribSea LifeRock Shelf Rock 40 lb LIFEROCK Real aragonitic base rock, not cement, no curing. Extensive macro and micro-porosity infused...

BRAND NEW CLOSEOUT SALE    ULTRA HEATER HEATING EXPERT A new generation of aquarium heaters distinguished by their impact-resistant plastic...

The New AI Prime 16HD shares the same cluster as the Hydra 32HD and Hydra 64HD. The new Prime will...

Kolar Labs 454g Crystal Cal Carbon Catalyic Kolar Labs Crystal Cal is a premium, laboratory grade, granular activated carbon designed...

Carbon Block Pre-Filter Cartridge for the RO Buddie. Features: Designed for use with the RO Buddie 50 & 100 GPD...

Nitrogen + Molybdenum solution to maintain optimal N:P ratio in your aquarium. Dose as needed to maintain NO3:PO4 ratio between...

BRAND NEW EXPIRED, save 60% - Factory sealed, expired dry food.  This expired on 8/2025, but it should still be...

Get your replacement reagents for your HI781 Marine Nitrate Low Range Colorimeter today. These high-quality reagents are manufactured in our...

OPEN BOX RETURN- SAVE 15%   World’s Smallest Dual-Sensor Aquarium Auto Top Off   Features: NEW! Controller programming & circuitry...

Reef Factory Dosing Pump Holder (1 unit) Mounting bracket for one dosing pump. With the shelf, you can aesthetically and...

Dosing pump Head for Dosing pump / Dosing pump X3 / Dosing pump X4 / KH keeper Plus (blue) Head...

BRAND NEW CLOSEOUT SALE   ULTRA HEATER HEATING EXPERT A new generation of aquarium heaters distinguished by their impact-resistant plastic...

AquaScraper Float Acrylic Algae Scraper Product Details and Features Works great on glass or acrylic aquariums, without scratching the surface....