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Water flow, one of the single, most important and overlooked basic necessities for any aquarium. In nature reefs are accustomed to constant changing water movements and throughout years of evolution they have changed to benefit from it. Proper water...

Specifically designed for Fluval Evo 13.5 & Spec 16 Desktop Aquariums, Fluval Foam Filter Block provides critical stage 1 mechanical filtration by trapping large particles and debris. It comes with a convenient handle for easy, no-mess handling.

NUVO PurityPack: Replacement Filter Media [Desktop] (1) High Performance Fiber Ball (1) High Capacity Coarse Granular Ferric Oxide Pouch (1) Premium ROX 0.8 Carbon Pouch Fits: Fusion 10, Fusion 14 Peninsula, Fusion 20, Fusion 20 Peninsula, Fusion...

NUVO PurityPack: Replacement Filter Media [Midsize] (2) High Performance Fiber Balls (2) High Capacity Coarse Granular Ferric Oxide Pouches (2) Premium ROX 0.8 Carbon Pouches Fits: Fusion 30, Fusion 40, Fusion 50 Lagoon High Performance Fiber...

NUVO PurityPack: Replacement Filter Media [Fullsize] (3) High Performance Fiber Balls (3) High Capacity Coarse Granular Ferric Oxide Pouches (3) Premium ROX 0.8 Carbon Pouches Fits: SR 60, SR 80 High Performance Fiber Ball High performance, non...

Features: Innovative magnetic attachment. Professionally designed optics for light filtration. Compatible with iPhone 12 or newer models. Creates a dark room effect, minimizing glare. Two slots for mixing and matching various types of filter...

ONE FREE ITEM PER ORDER.  THIS STICKER IS FREE WITH ANY ORDER OVER $50.  JUST ADD $50 WORTH OF PRODUCTS TO YOUR CART AND THIS ITEM WILL BE FREE. Sticker is 3" by 2" on white adhesive background.

ONE FREE ITEM PER ORDER.  THIS STICKER IS FREE WITH ANY ORDER OVER $50.  JUST ADD $50 WORTH OF PRODUCTS TO YOUR CART AND THIS ITEM WILL BE FREE. Sticker is 3" by 5" on white adhesive background.

ONE FREE ITEM PER ORDER.  THIS STICKER IS FREE WITH ANY ORDER OVER $50.  JUST ADD $50 WORTH OF PRODUCTS TO YOUR CART AND THIS ITEM WILL BE FREE. Sticker is 3" by 5" on white adhesive background.

ONE FREE ITEM PER ORDER.  THIS STICKER IS FREE WITH ANY ORDER OVER $50.  JUST ADD $50 WORTH OF PRODUCTS TO YOUR CART AND THIS ITEM WILL BE FREE. Sticker is 3" by 2" on white adhesive background.

ONE FREE ITEM PER ORDER.  THIS STICKER IS FREE WITH ANY ORDER OVER $50.  JUST ADD $50 WORTH OF PRODUCTS TO YOUR CART AND THIS ITEM WILL BE FREE. Sticker is 3" by 5" on white adhesive background.

ONE FREE ITEM PER ORDER.  THIS STICKER IS FREE WITH ANY ORDER OVER $50.  JUST ADD $50 WORTH OF PRODUCTS TO YOUR CART AND THIS ITEM WILL BE FREE. Sticker is 4" by 3" on white adhesive background.

CF500UVMKII 5-Stage Canister Filter w/ Vortex Prime & 9W UV - 525 gphThe CF-500UVMKII takes UV canister filters to the highest level with new and improved features such as Vortex Prime, Secure-mount Fittings, and an optional Surface Skimmer! This 525...

CF400UVMKII Canister Filter 4-Stage w/ Vortex Prime & UV 9W - 370 gphThe CF400-UV has become a very popular canister filter for the price and performance. The new and improved CF-400UVMKII now has Vortex Prime, Secure-mount Fittings, and an optional...

The new and improved CF-300MKII now includes Vortex Prime, Secure-mount Fittings and an optional Surface Skimmer! The 264 GPH multi-stage filtration system is ideal for fresh and saltwater aquariums ranging in size from 20 gallons to 75 gallons...

Kold Ster-il Water Filter uses ten inch canisters (clear), 3/4" Npt. Threaded fittings, flows 3.8 Gpm (14.3Lpm) for approximately 5,000 gallons (18925 L.). The smaller system can provide lower lead, mercury, cadmium levels due to the addition, into the...

AQUA-FIX is quick bonding hydraulic cement based Coraline Colored adhesive specifically designed for joining Live Rock together, as well as Lime Stone or Ceramic based Rock for Aquarium Display Use.

AQUA-FIX is quick bonding hydraulic cement based Coraline Colored adhesive specifically designed for joining Live Rock together, as well as Lime Stone or Ceramic based Rock for Aquarium Display Use.

The New Life Spectrum® line of positively buoyant floating pellets. The regular size pellets provide the nutrient density and water stability of a pellet while being an ideal substitute for flakes. For larger surface-feeding fish, New Life...

The New Life Spectrum® line of positively buoyant floating pellets. The regular size pellets provide the nutrient density and water stability of a pellet while being an ideal substitute for flakes. For larger surface-feeding fish, New Life...

The New Life Spectrum® line of positively buoyant floating pellets. The regular size pellets provide the nutrient density and water stability of a pellet while being an ideal substitute for flakes. For larger surface-feeding fish, New Life...

Our Reef Cleaner Packages are Wild Collected they let you naturally control algae, maintain crystal clear water, and keep your sand bed sifted. The number of cleaners provided in these packages are based on years of experience, and are tailored to...

Our Reef Cleaner Packages are Wild Collected they let you naturally control algae, maintain crystal clear water, and keep your sand bed sifted. The number of cleaners provided in these packages are based on years of experience, and are tailored to...

Our Reef Cleaner Packages are Wild Collected they let you naturally control algae, maintain crystal clear water, and keep your sand bed sifted. The number of cleaners provided in these packages are based on years of experience, and are tailored to...

Our Reef Cleaner Packages are Wild Collected they let you naturally control algae, maintain crystal clear water, and keep your sand bed sifted. The number of cleaners provided in these packages are based on years of experience, and are tailored to...

Our Reef Cleaner Packages are Wild Collected they let you naturally control algae, maintain crystal clear water, and keep your sand bed sifted. The number of cleaners provided in these packages are based on years of experience, and are tailored to...

Our Reef Cleaner Packages are Wild Collected they let you naturally control algae, maintain crystal clear water, and keep your sand bed sifted. The number of cleaners provided in these packages are based on years of experience, and are tailored to...

Replacement reference standard for Trident calibration. Also included in every 2 month supply reagent kit

Say “Au Revoir” to your old reservoir. The Hydrofill Ti Reservoir is the next generation auto top off gadget that simplifies tasks involved for evaporated makeup water. The smart design offers 15 gallons of storage capacity and a mere (12...

Nassarius snails are very active scavengers, feeding on crabs and carrion as dead fish, etc. They often burrow into marine substrates and then wait with only their siphon protruding, until they smell nearby food.  They are essential for aerating...

Cerith snails are small but elegant (white or dark) spiral shelled snails and are very active scavengers, feeding on crabs and carrion and dead fish, etc. They often burrow into marine substrates and then wait until they smell nearby food.  They are...

Red & Blue Leg Hermits are an essential part of any Clean up Crew.  This omnivore can access the smallest crevices and openings within aquascape to consume any nuisance algae including hair algae and cyanobacteria. They also will consume uneaten...

Paguristes cadenati, the scarlet hermit crab (not to be confused with the Mexican Red Leg Hermit), is a small (about 3 centimetres or 1.2 inches across) species of hermit crab with a bright red body and yellow eyestalks that...

Scarlet & Blue Leg Hermits are an essential part of any Clean up Crew.  This omnivore can access the smallest crevices and openings within aquascape to consume any nuisance algae including hair algae and cyanobacteria. They also will consume...

Black Margarita snails can make an excellent addition to your saltwater tank.  They are a great snail for consuming massive amounts of algae and can self-right if they fall off a rock or are knocked over. Clean Up Crews only Ship on Monday -...

Nerite snails are extremely popular for their unique patterns and colors, as well as their practical benefits. They work hard to clean algae off of glass, plants, and decorations, they eat hair algae, and they keep your substrate clean and the...

The Reef's Tireless Janitor Discover the hidden gem of aquarium clean-up crews with the incredible Brittle Starfish. A close relative of the Serpent Star, the Brittle Star is a master scavenger, using its long, slender, and highly flexible arms to...

The Heavyweight Champion of Clean-Up Crews is Here! When it comes to devouring nuisance algae, no snail does it better than the Mexican Turbo Snail (Turbo fluctuosus). Revered by hobbyists for decades, this species is the go-to choice for tackling...

Cerith snails are small but elegant (white or dark) spiral shelled snails and are very active scavengers, feeding on crabs and carrion and dead fish, etc. They often burrow into marine substrates and then wait until they smell nearby food.  They are...

Our Reef Cleaner Packages are Wild Collected they let you naturally control algae, maintain crystal clear water, and keep your sand bed sifted. The number of cleaners provided in these packages are based on years of experience, and are tailored to...