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Super-concentrated, enriched Artemia salina brine shrimp naturally high in beta-carotene! These brine shrimp are aquacultured in Western Australian salt ponds far from urban areas and pollution sources so you can be assured of its purity. Excellent...

Super-concentrated, enriched Artemia salina brine shrimp naturally high in beta-carotene! These brine shrimp are aquacultured in Western Australian salt ponds far from urban areas and pollution sources so you can be assured of its purity. Excellent...

Super-concentrated, enriched Artemia salina brine shrimp naturally high in beta-carotene! These brine shrimp are aquacultured in Western Australian salt ponds far from urban areas and pollution sources so you can be assured of its purity. Excellent...

ARCTI-PODS are a Refrigerated Food.  These are not LIVE Copepods.  This is a fish food.  Do not dump the entire container into your aquarium, you will nuke it.   Arcti-Pods® are large, nutrition-packed planktonic copepods...

ARCTI-PODS are a Refrigerated Food.  These are not LIVE Copepods.  This is a fish food.  Do not dump the entire container into your aquarium, you will nuke it.   Arcti-Pods® are large, nutrition-packed planktonic copepods...

ARCTI-PODS are a Refrigerated Food.  These are not LIVE Copepods.  This is a fish food.  Do not dump the entire container into your aquarium, you will nuke it.   Arcti-Pods® are large, nutrition-packed planktonic copepods...

These peppermint shrimp are captive-bred, tank raised & completely reef-safe, and will consume nuisance Aiptasia anemones. The name Peppermint Shrimp applies to a variety of Lysmata species that are distributed along the Eastern...

A compact aquarium controller with 4 Universal Sense ports dedicated to measuring parameters. Starter Kit Includes: Control XS Unit, Power Supply, Temperature Sensor, 4-Outlet WiFi AC Power Strip The HYDROS Control XS Starter Kit...

Please note: CONTROL XS ONLY - Nothing else is included. It doesn’t just make SENSE, it Controls too! About HYDROS Control XS Don’t let the compact size of the HYDROS Control XS fool you. It is perfectly capable of...

One of Mr Saltwater's Favorite Sayings on our Mr Saltwater Tank Reacts Shirt can now be yours!  Printed white on Royal Blue!

Balanced Phosphorus Source for Phosphorus-Limited, Low-Nutrient Reef Aquaria Used in conjunction with MICROBACTER7 and REEF BIOFUEL or KATALYST, enables natural nitrogen uptake to take place in systems with inadequate phosphorus...

Chaeto ships UPS 2 Day Air - We only ship Chaeto Monday, Tuesday & Wednesday till 1 pm to prevent it from sitting in UPS trucks/warehouses over a weekend. Spaghetti Algae, as Chaetomorpha is sometimes referred to, grows in a tangled mass. It...

This proven and effective treatment helps kill aiptasia and prevents it from reproducing. When used properly, it is reef safe and will not harm corals or other inhabitants. If you've ever had aiptasia anemones in your prized aquarium, you'd certainly...

This proven and effective treatment helps kill aiptasia and prevents it from reproducing. When used properly, it is reef safe and will not harm corals or other inhabitants. If you've ever had aiptasia anemones in your prized aquarium, you'd certainly...

Standard replacement RODI filter holder for RO Systems.  Perfect for replacing cracked filter holders due to freezing, etc. Replacement housing for RO system Standard size for all RO systems using 10" filters 1/4" threaded in and out...

Easily attaching to the side of most aquariums up to 1″ thick, the Multi-Chamber Holding & Breeding Box provides up to 3 separate housing compartments for protecting new or fry, sick/weak fish that require acclimation. Multi-functional...

The Waterbox Cube series and the new Peninsula Mini all use the same stock inlet nozzle. To add an RFG to any of these systems, you’ll need  our 16.5mm to 1/2in Modular Hose Adapter. Adding the 16.5mm adapter will convert the end of the stock...

Apex-Pods™ are live Apocyclops panamensis copepods.  They are an excellent food source that attracts finicky fish, such as mandarin dragonets, pipefish, Anthias sp. and wrasses. Shipping: Click Here to Learn More about Shipping...

Because Tigger-Pods (Tigriopus californicus copepods) swim upwards with a stimulating, jerky motion, they are attractive to a wide range of fish like Mandarin dragonets, Seahorses and Pipefish. They are easy to...

3" Aragonite Frag Tile 5/16" thick

2" Aragonite Frag Tile 5/16" thick

3" Aragonite Frag Disk 5/16" thick

2" Aragonite Frag Disk 5/16" thick

You’ve probably heard of Masstick. It’s the innovative fish food from EasyReefs that you can stick on any surface of your aquarium—to your glass or rocks, for example—so fish can naturally graze on it. Hobbyists choose Masstick...

Generic Refractometer - 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...

Hanna Salinity/Temperature Checker - HI98319 Salinity/Temperature Meter - Each meter is supplied with: CR2032 battery (inside the meter), Storage / Protection sleeve, Instruction manual, Quality certificate, and 35.00 ppt calibration standard sachet (4...

Generic Refractometer - 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...

This is a refill cartridge for Shark ADV internal power filters. It is an expandable modular cartridge that can be used alongside a wide range of Sicce filtration media. Can be customized for Bio Pellets and temporarily used and removed after use. Unique...

The IceCap Pod Habitat is a clever way to cultivate a collection of copepods that you can use to feed your reef aquarium. The way it works is simple: just place the Pod Habitat in your sump, refugium, or in the back of your all-in-one aquarium. In no...

The HI740271 is a replacement filter holder with Luer lock (1 pc.) for use with the HI781 Low Range Marine Nitrate Checker.

10 ml Syringe with Luer Lock used in Hanna HI781 Nitrate Checker

For aquariums from 400 to 1,000 liters (105 to 265 US gal.). Flow rate: approx. 8,000 l/h (2,100 US gal./h) Energy consumption: 14 W Voltage / frequency: 230V/50Hz (115V/60Hz) Cable length: 2 m (78”) Dimensions: ø90 mm (3...

This Compact Protein Skimmer Effectively Removes Organic Waste In Aquariums Up To 30 Gallons! The ideal protein skimmer for nano-tanks will mount inside the aquarium, or is small enough to fit in most rear overflow or filtration compartments. The...

Add On Standard Size DOULBE 10"x2" inch DI Filter. This Add On DI can be used with most RO units or used alone. The unit come filled with: TWO - Nuclear grade, virgin, color indicating Deionization resin. A mounting...

Add On Standard 10"x2" inch DI Stage. This Add On DI can be used with most RO units or used alone. The unit come filled with: Nuclear grade, virgin, color indicating Deionization resin. A mounting Bracket 4 feet of tubing

A Standard Carbon block works well to remove chlorine, however, more and more municipalities are mixing ammonia with chlorine; this combination is known as Chloramine.   The standard carbon block will strip the chlorine...

This 20 Micron Washable Add On Sediment is for use in front of your Reverse Osmosis unit ( or can be used alone).  Commonly used for heavy sediment loading in the 1 micron pre-filter.  When...

We consider this our PRO RODI system. It is also a 4 stage 100 GPD System but in this case, there is a built-in microcontroller that will automatically manage the flushing of the membrane, so you do not have to manually do anything. It also includes a...

This is what we consider our standard system. Our 4-stage standard system is exactly like the beginner system except for water pressure and TDS monitoring. It can tell you when your pressure is correct or not and what your TDS is for incoming and...

Mastertronic (MT) is the latest addition to our product range for automated water testing equipment. MT will be able to communicate with our other products such as Alkatronic, Dosetronic, Solartronic (patented dynamic lighting fixture), and Powertronic...