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Interchangeable with Spectrapure, Captive Purity's, Kent Marine's, AWI's, BRS's, and most residential/aquarium RO or RO/DI systems and SpectraPure® Eliminator Systems. - Remove chlorine, organics, taste and odor- Dual-purpose - combination sediment...

Coconut carbon blocks are manufactured with a high purity Coconut Shell Activated Carbon.  With a high chlorine reduction, great dirt-holding capacity, and greatly reduced carbon fines.  Great performance in reducing sediments, color, SOCs...

Sediment Filter Cartridge -  2.5 in dia x 10 in L.Sediment Filters are high efficiency depth gradient density filter cartridges with almost absolute micron ratings.They are strongly recommended for areas with extremely high sediment levels like NY,...

Sediment Filter Cartridge -  2.5 in dia x 10 in L. Economical light weight filters for standard 10" housings reduces fine sediment, sand, silt, rust and scale. Polypropylene Sediment, 4 layer structure nominal micron rating. Certified by NSF 42 and...

The HI736-25 are the replacement reagents for the HI736 Phosphorus Ultra Low Range Checker HC. These high quality reagents are manufactured in our state-of-the-art facility and are clearly marked with the lot number and expiration date on each packet for...

The Hanna Marine Alkalinity (dKH) Checker® bridges the gap between simple chemical test kits and professional instrumentation. Chemical test kits have limited accuracy and resolution since they rely upon the human eye to discern differences in color...

Broad spectrum antibiotic effective against most external infections Safe for marine and freshwater Minimal impact on bio-filter NeoPlex™ is a broad spectrum antibiotic effective against most external infections of both marine and freshwater...

ONE FREE ITEM PER ORDER.  THIS TANK 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 2.75" by 2.75" on clear adhesive background.  3x Maximum Per Customer.

This package includes: 1x - Apex DOS QD Dosing Pump 1x - Apex DDR Dosing Reservoir 2x - Apex 4 Meter DOS Tubing A multi-purpose dosing and fluid delivery system of uncompromising quality combined with the simplicity of Apex Fusion...

755 Checker   The HI755 Checker® HC (Handheld Colorimeter) provides a simple, accurate and cost effective way to measure alkalinity via PPM. Crucial in marine environments, alkalinity provides both the carbonate ion required for calcium...

The SHARK ADV is an exclusively designed internal filter with a patented magnetic quick uncoupling system (MCS System). The modular design allows the possibility of adding one or more filtering compartments to increase the filtration capacity...

The SHARK ADV is an exclusively designed internal filter with a patented magnetic quick uncoupling system (MCS System). The modular design allows the possibility of adding one or more filtering compartments to increase the filtration capacity...

Compatible with A160, A360 & AP700 (TWO Required for AP700) For rimmed and rimless tanks, the new Mounting Arms are fully adjustable, compatible with A160 and A360 series, and offer better cable management. (Part# KSAGN01 Kessil Mounting Arm) *For...

Extreme Accuracy. Easy to Test in 4 Steps - Zero the Checker, Add a regent to your water sample, Insert the Vile in the Checker, Read the Numbered Results. BOOM EASY. ZAIR. Zero, Add, Insert, Read. Includes reagents for 25x tests. The Hanna...

This reagent works with both the 755 & 772 Hanna checker.  It may come with the tag 755-26 or 772-26, both reagents work with both checkers. Extreme Accuracy. Easy to Test in 4 Steps - Zero the Checker, Add a regent to your water sample,...

Extreme Accuracy. Easy to Test in 4 Steps - Zero the Checker, Add a regent to your water sample, Insert the Vile in the Checker, Read the Numbered Results. BOOM EASY. ZAIR. Zero, Add, Insert, Read. Includes reagents for 25x tests. The HI758...

It is designed for testing the concentration of salt water and brine and used for quality control in research and clinical laboratories and marine industry. Its scale provides a direct reading of the specific gravity and concentration (part per Thousand)...

The Fluid Monitoring Kit Includes: 1x - FMM Fluid Monitoring Module 1x - 1" Flow Sensor (FS-100) 2x - 1/2" Flow Sensor (FS-50) 2x - 1" Unions 4x - 1/2" Adapters FMK What's In The Box? The FMM (Fluid Monitoring Module) is a multi-purpose...

This refractometer does not come with a case or battery. The new Milwaukee MA887 Seawater Digital Refractometer encompasses 3 different types of user selected scales for the measurement of seawater providing for a much more precise evaluation. Each...

Flatworm Stop strengthens all kind of corals and reduces parasitical flatworms on Acropora corals at the same time.  Very valuable ingredients are assimilated directly after dosage. In our tests also ailing small polyp stony corals recovered and...

Flatworm Stop strengthens all kind of corals and reduces parasitical flatworms on Acropora corals at the same time.  Very valuable ingredients are assimilated directly after dosage. In our tests also ailing small polyp stony corals recovered and...

Main features of Red Sea’s Seawater Refractometer include:Directly reads the absolutesalinity ofseawaterat25°C/77 0F ( No need for seawater or temperature compensation factors)Specifically designed for the ionic content of seawater (NSW) for...

With the EHEIM precision heater your fish receive exactly the right temperature – in any aquarium. Obvious ideas often are the best ones. For example, the aquarium heater as a rod. The heating rod is simply hung in the water and heats it. It is...

With the EHEIM precision heater your fish receive exactly the right temperature – in any aquarium. Obvious ideas often are the best ones. For example, the aquarium heater as a rod. The heating rod is simply hung in the water and heats it. It is...

With the EHEIM precision heater your fish receive exactly the right temperature – in any aquarium. Obvious ideas often are the best ones. For example, the aquarium heater as a rod. The heating rod is simply hung in the water and heats it. It is...

With the EHEIM precision heater your fish receive exactly the right temperature – in any aquarium. Obvious ideas often are the best ones. For example, the aquarium heater as a rod. The heating rod is simply hung in the water and heats it. It is...

With the EHEIM precision heater your fish receive exactly the right temperature – in any aquarium. Obvious ideas often are the best ones. For example, the aquarium heater as a rod. The heating rod is simply hung in the water and heats it. It is...

With the EHEIM precision heater your fish receive exactly the right temperature – in any aquarium. Obvious ideas often are the best ones. For example, the aquarium heater as a rod. The heating rod is simply hung in the water and heats it. It is...

With the EHEIM precision heater your fish receive exactly the right temperature – in any aquarium. Obvious ideas often are the best ones. For example, the aquarium heater as a rod. The heating rod is simply hung in the water and heats it. It is...

With the EHEIM precision heater your fish receive exactly the right temperature – in any aquarium. Obvious ideas often are the best ones. For example, the aquarium heater as a rod. The heating rod is simply hung in the water and heats it. It is...

With the EHEIM precision heater your fish receive exactly the right temperature – in any aquarium. Obvious ideas often are the best ones. For example, the aquarium heater as a rod. The heating rod is simply hung in the water and heats it. It is...

EHEIM Plant tongs Our plant tongs enable you to work in your aquarium without having to roll up your sleeves. You can place, move or remove plants and other items in the bottom of the tank and even difficult to reach become accessible. Dead leaves or...

EHEIM Plant tongs Our plant tongs enable you to work in your aquarium without having to roll up your sleeves. You can place, move or remove plants and other items in the bottom of the tank and even difficult to reach become accessible. Dead leaves or...

Now Includes a Prepaid USPS First Class Shipping Label + Testing is Now Done in the USA! The results of this test provide you with the most detailed analysis of marine aquarium water you've ever seen, enabling you to understand exactly what's missing,...

For herbivorous Marine or Freshwater Fish. Chopped natural seaweeds, harvested and dried to preserve their high nutritional value. Ideal for Tangs, Angelfish, some large Butterflyfish, Cichlids, Goldfish, Plecos, and Livebearers. NET WT. 30g (1 oz)

Super nutritious natural Green Seaweed chopped into Flakes. Ideal for marine herbivores such as Tangs and Surgeonfish, Moorish Idols, Parrotfish, Angelfish, large Butterflyfish, and herbivorous freshwater fishes, such as Cichlids and Goldfish.

Super nutritious Natural Red Seaweed sheets. Ideal for marine herbivores such as Tangs and Surgeonfish, Moorish Idols, Parrotfish, Angelfish, large Butterflyfish, and herbivorous freshwater fishes, such as Cichlids and Goldfish...

Super nutritious Natural Red Seaweed. Ideal for marine herbivores such as Tangs and Surgeonfish, Moorish Idols, Parrotfish, Angelfish, large Butterflyfish, and herbivorous freshwater fishes, such as Cichlids and Goldfish. Size:   12g (0.4 oz)

Super nutritious Natural Purple Seaweed sheets. Ideal for marine herbivores such as Tangs and Surgeonfish, Moorish Idols, Parrotfish, Angelfish, large Butterflyfish, and herbivorous freshwater fishes, such as Cichlids and Goldfish...

Super nutritious Natural Purple Seaweed. Ideal for marine herbivores such as Tangs and Surgeonfish, Moorish Idols, Parrotfish, Angelfish, large Butterflyfish, and herbivorous freshwater fishes, such as Cichlids and Goldfish. Size: 12g (0.4 oz)