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  •  Hanna HI774 Ultra Low Range Phosphate Checker - Marine  Hanna HI774 Ultra Low Range Phosphate Checker - Marine

    Hanna Instruments

    Hanna HI774 Ultra Low Range Phosphate Checker - Marine

    Hanna HI774 Ultra Low Range Phosphate Checker - Marine Our HI774 Ultra Low Range Phosphate Checker will be essentially the same specifications as the HI736 Ultra Low Range Phosphorus Checker however it will not require a conversion but read directly in...

    $63.95
  •  Hanna HI780 Marine pH Checker  Hanna HI780 Marine pH Checker  Hanna HI780 Marine pH Checker

    Hanna Instruments

    Hanna HI780 Marine pH Checker

     Hanna HI780 Marine pH Checker Get accurate water testing results with the HI780 Marine pH Colorimeter. With a digital read out, there is no more struggling to determine colors visually. This pH tester's compact design fits in your pocket or stores...

    $63.95
  • Hanna HI718 Iodine Checker Hanna HI718 Iodine Checker Hanna HI718 Iodine Checker

    Hanna Instruments

    Hanna HI718 Iodine Checker

    Hanna Iodine Checker HI718 ***FRESHWATER ONLY*** Hanna Iodine Checker HI718 is extremely simple to use. First, zero the instrument with your water sample. Next, add the reagent. Last, place the vial into the instrument, press the button and read...

    $63.95
  • Hanna HI758 Marine Calcium Checker Hanna HI758 Marine Calcium Checker Hanna HI758 Marine Calcium Checker Hanna HI758 Marine Calcium Checker

    Hanna Instruments

    Hanna HI758 Marine Calcium Checker

    Hanna Marine Calcium Checker HI758 Calcium presence in water supplies results from passage over deposits of limestone, dolomite, gypsum and gypsiferous shale. Its concentration may extend from 0 to several hundred milligrams per liter,depending on its...

    $63.95
  • Hanna HI781 Marine Nitrate Low Range Checker Hanna HI781 Marine Nitrate Low Range Checker Hanna HI781 Marine Nitrate Low Range Checker

    Hanna Instruments

    Hanna HI781 Marine Nitrate Low Range Checker

    Hanna HI781 Marine Nitrate Low Range Checker Get highly accurate results with the HI781 Marine Nitrate Low Range Colorimeter. With a digital read out, there is no more struggling to determine colors visually. This nitrate tester's compact design...

    $63.95
  • Hanna HI782 Marine High Range Nitrate Checker Hanna HI782 Marine High Range Nitrate Checker Hanna HI782 Marine High Range Nitrate Checker

    Hanna Instruments

    Hanna HI782 Marine High Range Nitrate Checker

    Hanna HI782 Marine High Range Nitrate Checker The HI782 Marine Nitrate High Range Colorimeter is specifically designed to quickly and accurately determine high levels of nitrate for saltwater aquariums and marine applications. With a digital readout,...

    $63.95
  • Hanna HI783 Marine Magnesium Checker Hanna HI783 Marine Magnesium Checker Hanna HI783 Marine Magnesium Checker Hanna HI783 Marine Magnesium Checker

    Hanna Instruments

    Hanna HI783 Marine Magnesium Checker

    Hanna HI783 Marine Magnesium Checker Our Marine Magnesium Checker® HC (HI783) is designed to accurately and quickly determine the magnesium level in marine (saltwater) samples. The digital readout makes measurements effortless. Range: 1,000 to 1,800...

    $63.95
  • Hanna HI784 Marine Ammonia Checker Hanna HI784 Marine Ammonia Checker Hanna HI784 Marine Ammonia Checker

    Hanna Instruments

    Hanna HI784 Marine Ammonia Checker

    Hanna HI784 Marine Ammonia Checker The HI784 Marine Ammonia Checker HC is a handheld colorimeter that uses the Beer-Lambert principle to determine the concentration of ammonia colorimetrically. The HI784 is designed specifically to measure ammonia...

    $63.95
  • HYDROS 1" Flow Sensor HYDROS 1" Flow Sensor HYDROS 1" Flow Sensor HYDROS 1" Flow Sensor

    HYDROS

    HYDROS 1" Flow Sensor

    HYDROS 1" Flow Sensor Flow Range: 50-1500gphWire Length: 8ft Includes schedule 80 PVC Unions Monitor Passing Water Flow The HYDROS Flow Sensors are easy-to-install flow meters that communicate to the HYDROS app the flow rate of water passing through...

    $61.99
  • AutoAqua Smart Level Security AutoAqua Smart Level Security AutoAqua Smart Level Security AutoAqua Smart Level Security AutoAqua Smart Level Security

    AutoAqua

    AutoAqua Smart Level Security

    AutoAqua Smart Level Security Smart Level Security by AutoAqua prevents aquariums from overflowing or equipment from running dry. Magnetically coupled optical sensor mounts up to smooth surfaces 1/2 inch thick. A...

    $59.99
  • HYDROS Dosing Pump HYDROS Dosing Pump HYDROS Dosing Pump HYDROS Dosing Pump HYDROS Dosing Pump

    HYDROS

    HYDROS Dosing Pump

    HYDROS Dosing Pump The HYDROS Dosing Pump is a simple and affordable way to automate the addition of liquid supplements, trace elements, and two-part solutions to an aquarium. Connect the Dosing Pump to any available HYDROS Control Drive Port for easy...

    $59.99
  • Neptune Systems Lunar Simulator LEDs (4)

    Neptune Systems

    Neptune Systems Lunar Simulator LEDs (4)

    Neptune Systems Lunar Simulator LEDs (4)Want to more accurately simulate the natural environment for your tank inhabitants?Moonlight in the ocean is believed to be as significant as the time spent in full daylight. Moonlight triggers various internal and...

    $59.99
  • Smart Temp Security Smart Temp Security

    AutoAqua

    Smart Temp Security

    Smart Temp Security Smart Temp Security controls an aquarium heater or chiller within a range of 72℉ to 84℉. A magnetically coupled optical sensor mounts to most smooth surfaces up to 1/2 inch thick.    Plug&Play -...

    $59.99
  • Seneye Magnetic Holder Pro Seneye Magnetic Holder Pro

    Seneye Magnetic Holder Pro

    Seneye Magnetic Holder Pro The seneye magnetic holder pro is for those hobbyists who keep tanks with glass as thick as 16mm! these slim line holders fix your seneye in place allowing you to monitor your water level where ever you are in the world. The...

    $59.00
  • HYDROS 3/4" Flow Sensor HYDROS 3/4" Flow Sensor HYDROS 3/4" Flow Sensor HYDROS 3/4" Flow Sensor

    HYDROS

    HYDROS 3/4" Flow Sensor

    HYDROS 3/4" Flow Sensor Flow Range: 40-800gphWire Length: 8ft Includes schedule 80 PVC Unions Monitor Passing Water Flow The HYDROS Flow Sensors are easy-to-install flow meters that communicate to the HYDROS app the flow rate of water passing through...

    $58.99
  • Hanna Instruments - Checker Plus pH Tester HI98100 Plus Hanna Instruments - Checker Plus pH Tester HI98100 Plus Hanna Instruments - Checker Plus pH Tester HI98100 Plus Hanna Instruments - Checker Plus pH Tester HI98100 Plus

    Hanna Instruments

    Hanna Instruments - Checker Plus pH Tester HI98100 Plus

    Hanna Instruments - Checker Plus pH Tester HI98100 Plus The HI98100 Checker Plus is the next generation of the original Hanna Checker pH tester. The Checker is the most popular pH meter in the world with over 1 million meters used since its introduction...

    $56.00
  • C-66 Waterproof Conductivity Tester by Milwaukee Instruments

    Milwaukee Instruments

    C-66 Waterproof Conductivity Tester by Milwaukee Instruments

    C-66 Waterproof ConductivityTester by Milwaukee InstrumentsThese instruments are designed for heavy duty applications. All testers have waterproof casing, double junction replaceable glass C-66 Waterproof ConductivityTester by Milwaukee Instruments.****...

    $54.00
  • Hanna Checktemp® 1 Digital Thermometer - HI98509 Hanna Checktemp® 1 Digital Thermometer - HI98509

    Hanna Instruments

    Hanna Checktemp® 1 Digital Thermometer - HI98509

    Hanna Checktemp® 1 Digital Thermometer - HI98509 The HI98509 Checktemp® 1 is a high-accuracy thermometer with a 1 m (3.3') flexible, silicone cable connecting the meter and the stainless steel probe. The sharp-tip penetration probe easily...

    $53.00
  • AutoAqua Smart Skimmer Security AutoAqua Smart Skimmer Security AutoAqua Smart Skimmer Security AutoAqua Smart Skimmer Security AutoAqua Smart Skimmer Security

    AutoAqua

    AutoAqua Smart Skimmer Security

    AutoAqua Smart Skimmer Security AutoAqua's Smart Skimmer Security prevents protein simmer from overflowing. Magnetically coupled optical sensor mounts up to smooth surfaces 1/2 inch thick.Skimmer Security Made Simple Smart Skimmer...

    MSRP: $59.99
    $49.99
  • HYDROS Dual Inline TDS Sensor HYDROS Dual Inline TDS Sensor HYDROS Dual Inline TDS Sensor

    HYDROS

    HYDROS Dual Inline TDS Sensor

    HYDROS Dual Inline TDS Sensor Monitor your RO/DI units' water quality with HYDROS Dual Inline TDS Sensor. Plugs directly into any HYDROS Control with an available Sense Port and does not require any additional power source.    Dual Inline TDS...

    $49.99
  • Neptune Trident Two-Month Reagent Kit

    Neptune Systems

    Neptune Trident Two-Month Reagent Kit

    Neptune Trident Two-Month Reagent Kit Neptune Systems recommends keeping on hand no more Trident reagent than you might expect to consume within the next 12 months.  2-month reagent kit (based on the default testing schedule of 4-Alk/2-Ca/2-Mg per...

    $49.99
  • Triton ICP-OES Testing Kit Triton ICP-OES Testing Kit

    Triton

    Triton ICP-OES Testing Kit

    Triton ICP-OES Testing Kit We have been utilizing Triton's ICP-OES testing system for some time with aquariums, additives, and almost any other liquid that we have wanted to know what is in it exactly. Triton now gives you the ability to know what is in...

    $49.00
  • Triton N-DOC Organics Test Kit

    Triton

    Triton N-DOC Organics Test Kit

    Triton N-DOC Organics Test Kit Application:  Deliver insights into complex organic systems in seawater: Carbon and Nitrogen Use N/C/P ratio to manage sources of Carbon / Amino acid and control their influence on bacteria and corals in reef...

    $49.00
  • Neptune Systems I/O Break Out Box

    Neptune Systems

    Neptune Systems I/O Break Out Box

    Neptune Systems I/O Break Out Box Easily add float switches, water on the floor sensors, etc. to the APEX, AquaController 3 or AquaController 3 Pro. Simply plug the Breakout box's minidin 8 cable into the AquaController I/O port, and then attach the...

    $47.99
  • Neptune Systems LLS Liquid Level Sensor - 4 Inch Neptune Systems LLS Liquid Level Sensor - 4 Inch Neptune Systems LLS Liquid Level Sensor - 4 Inch

    Neptune Systems

    Neptune Systems LLS Liquid Level Sensor - 4 Inch

    Neptune Systems LLS Liquid Level Sensor - 4 Inch The Neptune LLS is a first of its kind industry exclusive! While most liquid level sensors simply measure the presence or absence of liquid at a predetermined  sensor height, the LLS is one continuous...

    $47.99
  • Neptune Systems Lunar Simulator LEDs (3)

    Neptune Systems

    Neptune Systems Lunar Simulator LEDs (3)

    Neptune Systems Lunar Simulator LEDs (3)Want to more accurately simulate the natural environment for your tank inhabitants?Moonlight in the ocean is believed to be as significant as the time spent in full daylight. Moonlight triggers various internal and...

    $47.99
  • Practical Multi-purpose Utility Pump v2 - Neptune Systems

    Neptune Systems

    Practical Multi-purpose Utility Pump v2 - Neptune Systems

    Practical Multi-purpose Utility Pump v2 - Neptune Systems The PMUP is a 24VDC submersible pump that was designed to directly connect to the DC24 accessory ports on either the 1Link module OR the same ports on the new Energy Bar 832.  If you own our...

    $47.99
  • Seneye Dri Box Seneye Dri Box Seneye Dri Box Seneye Dri Box

    Seneye

    Seneye Dri Box

    Seneye Dri Box The seneye DRi is a waterproof connection box that allows you to keep your electrical connections safe and tidy; best of all there is no need for rewiring or expensive electricians. DRi is ideal for both ponds and aquariums. With a...

    $45.00
  •  API Reef Master Test Kit   API Reef Master Test Kit

    API

    API Reef Master Test Kit

    API Master Reef Test KitTo maintain and grow healthy corals, the correct balance of calcium and carbonates is essential, as are low levels of phosphate and nitrate. This kit provides highly accurate testing for each of these critical parameters: ...

    $44.99
  •  Neptune Systems MPR Apex Magnetic Probe Holder

    Neptune Systems

    Neptune Systems MPR Apex Magnetic Probe Holder

    Neptune Apex Magnetic Probe HolderThe little new product we promised. It may be little, but it has been in demand for a long time. The MPR - Magnetic Probe Rack was designed specifically for the Apex and will hold our larger diameter temperature probe,...

    $44.99
  • ATI Elements ICP-OES Water Analysis Kit ATI Elements ICP-OES Water Analysis Kit

    ATI

    ATI Elements ICP-OES Water Analysis Kit

    ATI ICP-OES Water Analysis Kit With the ARCOS II ICP-OES machine, we have chosen an analyser of the highest in its class. It is characterised by its high precision and is used wherever high demands on element analysis are required. So it is not...

    $44.95
  • Pinpoint pH Probe

    Pinpoint - American Marine

    Pinpoint pH Probe

    Pinpoint pH Probe.Replacement pH probe for Pinpoint pH monitors and controllers.Pinpoint pH Probe.Replacement pH probe for Pinpoint pH monitors and controllers.Product code: 1307Item No. TE-AMPP-01050

    $44.95
  • Neptune Systems LD-3 Optical Multi-Surface Leak Sensor Neptune Systems LD-3 Optical Multi-Surface Leak Sensor Neptune Systems LD-3 Optical Multi-Surface Leak Sensor

    Neptune Systems

    Neptune Systems LD-3 Optical Multi-Surface Leak Sensor

    Neptune Systems LD-3 Optical Multi-Surface Leak Sensor Neptune's LD-3 Multi-Surface Optical Leak Sensor marks a significant improvement over its analog counterpart, the LD-2 Solid Surface Leak Detection Probe. While the LD-2 utilizes conductive strips...

    $42.99
  • Neptune Systems MOS Magnetic Optical Sensor Neptune Systems MOS Magnetic Optical Sensor Neptune Systems MOS Magnetic Optical Sensor

    Neptune Systems

    Neptune Systems MOS Magnetic Optical Sensor

    Neptune Systems MOS Magnetic Optical Sensor The Neptune MOS replaces the previous OS-1-M and features an updated design that fits into tighter spaces and helps to prevent water incursion into the sensor. The MOS plugs into an Apex FMM port and uses...

    $41.99
  •  API Freshwater Master Test Kit   API Freshwater Master Test Kit

    API

    API Freshwater Master Test Kit

    API Master Freshwater Test Kit This kit tests tap water and aquarium water for five different parameters that affect the health of freshwater fish: pH, High Range pH, Ammonia, Nitrite and Nitrate.  Highly accuate and economical.  Unique,...

    $39.99
  •  API Saltwater Master Test Kit   API Saltwater Master Test Kit

    API

    API Saltwater Master Test Kit

    API Master Saltwater Test Kit.A complete kit for testing marine aquarium water. Tests water four ways to protect marine fish and invertebrates from dangerous water conditions. Kit includes tests for: High Range pH, Ammonia, Nitrite, Nitrate, plus four...

    $39.99
  • HYDROS 4 Outlet WiFi AC Power Strip HYDROS 4 Outlet WiFi AC Power Strip HYDROS 4 Outlet WiFi AC Power Strip HYDROS 4 Outlet WiFi AC Power Strip HYDROS 4 Outlet WiFi AC Power Strip

    HYDROS

    HYDROS 4 Outlet WiFi AC Power Strip

    HYDROS 4 Outlet WiFi AC Power Strip A Smart and Affordable Way to Power Your Aquarium Gear The HYDROS Power 4 WiFi Power Strip is a smart power bar designed to work with the CoralVue HYDROS platform.  The Power 4 has 4 x 120V AC outlets and 4 x...

    $39.99
  • HYDROS Leak Detection Sensor HYDROS Leak Detection Sensor HYDROS Leak Detection Sensor HYDROS Leak Detection Sensor HYDROS Leak Detection Sensor

    HYDROS

    HYDROS Leak Detection Sensor

    HYDROS Leak Detection Sensor The HYDROS Leak Detection Sensor is a solid surface leak detector that can sense when freshwater or saltwater is underneath it and use that information to protect your aquarium, home, or office from total disaster...

    $39.99
  • HYDROS Rope Leak Sensor Kit HYDROS Rope Leak Sensor Kit

    HYDROS

    HYDROS Rope Leak Sensor Kit

    HYDROS Rope Leak Sensor Kit The HYDROS Leak Detection Rope Sensor is the first of its kind in the aquarium industry. The moment water comes into contact with it, that information can be used to alert you on your smartphone, sound an alarm, turn pumps...

    $39.99
  • HYDROS Skimmer Sensor HYDROS Skimmer Sensor HYDROS Skimmer Sensor HYDROS Skimmer Sensor HYDROS Skimmer Sensor

    HYDROS

    HYDROS Skimmer Sensor

    HYDROS Skimmer Sensor The HYDROS Skimmer Sensor serves a very specific and important role: it prevents your protein skimmer from overflowing onto the floor or back into your sump. The way it works is easy: just place the sensor inside any protein...

    $39.99
  • HYDROS Triple Optical Water Level Sensor HYDROS Triple Optical Water Level Sensor HYDROS Triple Optical Water Level Sensor HYDROS Triple Optical Water Level Sensor HYDROS Triple Optical Water Level Sensor

    HYDROS

    HYDROS Triple Optical Water Level Sensor

    HYDROS Triple Optical Water Level Sensor 3 Water Level Sensors for Added Redundancy The HYDROS Triple Optical Water Level Sensor can be used for a variety of aquarium applications, such as sensing when your tank needs to be topped off or detecting when...

    $39.99
  • HYDROS Water Level Sensor HYDROS Water Level Sensor HYDROS Water Level Sensor HYDROS Water Level Sensor HYDROS Water Level Sensor

    HYDROS

    HYDROS Water Level Sensor

    HYDROS Water Level Sensor The HYDROS Water Level Sensor is an optical sensor you can use for a variety of aquarium applications, such as sensing when your tank needs to be topped off or to detect when a dosing container needs a refill. It plugs into any...

    $39.99
  • Seneye Replacement Slides - Ammonia and pH (3 Pack) Seneye Replacement Slides - Ammonia and pH (3 Pack) Seneye Replacement Slides - Ammonia and pH (3 Pack) Seneye Replacement Slides - Ammonia and pH (3 Pack)

    Seneye

    Seneye Replacement Slides - Ammonia and pH (3 Pack)

    Seneye Replacement Slides - Ammonia and pH (3 Pack) This pack includes three slides totalling 3 months seneye+. This is just $11 for 30 day of water monitoring, including e-mail and SMS alerts The seneye+ includes the disposable...

    $39.99
  • Deluxe LED Salinity Refractometer with ATC Deluxe LED Salinity Refractometer with ATC Deluxe LED Salinity Refractometer with ATC

    AquaCave

    Deluxe LED Salinity Refractometer with ATC

    Deluxe LED Salinity Refractometer with ATC Easy to use LED powered lens. For the most precise measurement of salinity, the experts use a Refractometer. This high-tech instrument is used to measure salinity when perfect conditions are needed for...

    $39.95
  • Sea Side Aquatics Magnetic Float Switch Sea Side Aquatics Magnetic Float Switch Sea Side Aquatics Magnetic Float Switch Sea Side Aquatics Magnetic Float Switch

    Seaside

    Sea Side Aquatics Magnetic Float Switch

    Sea Side Aquatics Magnetic Float Switch Magnetic Float Switch Sensor Super strong magnet accommodates glass up to 3/4" thick  Sea Side Aquatics Magnetic Float Switch Magnetic Float Switch Sensor Super strong magnet accommodates glass up to...

    $39.95