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Controllers & Testing

60 of 137 Items
  • Alkatronic Alkalinity Controller Alkatronic Alkalinity Controller Alkatronic Alkalinity Controller

    FOCUSTRONIC

    Alkatronic Alkalinity Controller

    Alkatronic Alkalinity Controller The Alkatronic is an all-in-one device that automatically monitors and maintains carbonate hardness values of your aquarium throughout the day. It can dramatically simplify and improve how we manage the KH parameters of...

    $989.99
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  • Dosetronic Dosing Pump Dosetronic Dosing Pump Dosetronic Dosing Pump Dosetronic Dosing Pump Dosetronic Dosing Pump

    FOCUSTRONIC

    Dosetronic Dosing Pump

    Dosetronic 5 Pump Dosing Station Dosetronic is a truly smart dosing station for the reef aquarium with 5 independent channels that are using high precision stepper motors. When combined with the Alkatronic, the 2 unique functions...

    $714.99
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  • HYDROS Control X4 / XP8 PRO Pack HYDROS Control X4 / XP8 PRO Pack HYDROS Control X4 / XP8 PRO Pack HYDROS Control X4 / XP8 PRO Pack HYDROS Control X4 / XP8 PRO Pack

    HYDROS

    HYDROS Control X4 / XP8 PRO Pack

    HYDROS Control X4 / XP8 PRO Pack The Ultimate Aquarium Monitoring and Control System The HYDROS Control X4 PRO Pack includes two Control devices, the Control XP8 and Control X4. Combine these Controls to create a secure and impressive set-up for...

    $659.99
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  • Seneye Reef Pack with Dri Box and WiFi Web Server Seneye Reef Pack with Dri Box and WiFi Web Server Seneye Reef Pack with Dri Box and WiFi Web Server Seneye Reef Pack with Dri Box and WiFi Web Server Seneye Reef Pack with Dri Box and WiFi Web Server

    Seneye

    Seneye Reef Pack with Dri Box and WiFi Web Server

    Seneye Reef Pack with Dri Box and WiFi Web Server Are your corals not as vibrant as you expect? Have you ever had an aquarium crash unexpectedly? Now with the seneye Reef you can continuously monitor and analyze key life-critical parameters in your...

    $499.00
    Add to Cart
  • HYDROS Control X4 Starter Pack HYDROS Control X4 Starter Pack HYDROS Control X4 Starter Pack HYDROS Control X4 Starter Pack HYDROS Control X4 Starter Pack

    HYDROS

    HYDROS Control X4 Starter Pack

    HYDROS Control 4 Starter Pack Achieve Ultimate Aquarium Control with the HYDROS Control 4 Starter Pack This starter kit includes all essential equipment needed to monitor and control a healthy aquarium including a Control 4 device, HYDROS App,...

    $449.99
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  • COR-20 Water Pump - Neptune Systems COR-20 Water Pump - Neptune Systems COR-20 Water Pump - Neptune Systems COR-20 Water Pump - Neptune Systems COR-20 Water Pump - Neptune Systems

    Neptune Systems

    COR-20 Water Pump - Neptune Systems

    COR20 Intelligent Return Pump - Neptune Systems Your return pump is by far the most important piece of equipment on your aquarium. It circulates the water which is basically the life-blood of a tank. Creating a great aquarium is just like building a...

    $399.99
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  • COR-15 Water Pump - Neptune Systems COR-15 Water Pump - Neptune Systems COR-15 Water Pump - Neptune Systems COR-15 Water Pump - Neptune Systems COR-15 Water Pump - Neptune Systems

    Neptune Systems

    COR-15 Water Pump - Neptune Systems

    COR15 Intelligent Return Pump - Neptune Systems Your return pump is by far the most important piece of equipment on your aquarium. It circulates the water which is basically the life-blood of a tank. Creating a great aquarium is just like building a...

    $339.99
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  • Neptune Systems PMK PAR Monitoring Kit Neptune Systems PMK PAR Monitoring Kit Neptune Systems PMK PAR Monitoring Kit

    Neptune Systems

    Neptune Systems PMK PAR Monitoring Kit

    Neptune Systems PMK PAR Monitoring Kit FeaturesFeatures and Benefits: Performs continuous light-level monitoring for your aquarium Measures actual PAR – the light corals and plants use Prevents burning out corals Includes ASM – the new...

    $339.99
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  • Neptune Systems EnergyBar EB-832 Neptune Systems EnergyBar EB-832

    Neptune Systems

    Neptune Systems EnergyBar EB-832

    Neptune Systems Energy-Bar 832 Note: The New EB 832 is not compatible with the classic Apex or Apex Jr systems This Energy Bar 832 was redesigned from the ground up.  Not only does it have eight 120V AC outlets, but it includes an internal 100W 24VDC...

    $304.99
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  • ITC Reefculture PARwise ITC Reefculture PARwise ITC Reefculture PARwise ITC Reefculture PARwise

    Seneye

    ITC Reefculture PARwise

    ITC Reefculture PARwise PARwise is a unique light meter with the ability to measure spectrum. It can be used underwater and in the air. It gives you all of the relevant lighting measurements required to make informed decisions. Achieve Accurate Light...

    $299.99
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  • ATK v2 - Automatic Top-Off Kit - Neptune Systems

    Neptune Systems

    ATK v2 - Automatic Top-Off Kit - Neptune Systems

    ATK v2 - Automatic Top-Off Kit - Neptune Systems The ATK (Automatic Top-off Kit) is a simple, standalone, and complete solution for replacing water lost to evaporation. The new aquarium hobbyist has many challenges, but none is more annoying than the...

    $239.99
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  • Neptune Systems FMK Flow Monitoring Kit Neptune Systems FMK Flow Monitoring Kit Neptune Systems FMK Flow Monitoring Kit

    Neptune Systems

    Neptune Systems FMK Flow Monitoring Kit

    Neptune Systems Flow Monitoring Kit (FMM, (2) FS-50, (4) 1/2" Adapters, (1) FS-100, (2) 1" union START MONITORING FLOW IN YOUR AQUARIUM. THIS KIT INCLUDES: FMM - FLUID MONITORING MODULE 1'' FLOW SENSOR (FS-100) TWO 1/2'' FLOW SENSORS...

    $219.99
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  • Seneye Reef Monitor Seneye Reef Monitor Seneye Reef Monitor Seneye Reef Monitor Seneye Reef Monitor

    Seneye

    Seneye Reef Monitor

    Seneye Reef Pack with Dri Box and WiFi Web Server Are your corals not as vibrant as you expect? Have you ever had an aquarium crash unexpectedly? Now with the seneye Reef you can continuously monitor and analyze key life-critical parameters in your...

    $219.00
    Add to Cart
  • HYDROS Control X2 Starter Pack HYDROS Control X2 Starter Pack HYDROS Control X2 Starter Pack HYDROS Control X2 Starter Pack

    HYDROS

    HYDROS Control X2 Starter Pack

    HYDROS Control 2 Starter Pack Monitor & Control Like a Pro, Even if You're a Beginner The HYDROS Control 2 Starter Pack is the first affordable and easy-to-use aquarium controller kit in the aquatic industry. This starter pack includes all...

    $199.99
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  • HYDROS Control XS Starter Kit HYDROS Control XS Starter Kit HYDROS Control XS Starter Kit HYDROS Control XS Starter Kit HYDROS Control XS Starter Kit

    HYDROS

    HYDROS Control XS Starter Kit

    HYDROS Control XS Starter Kit 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 It doesn’t just make...

    $199.99
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  • Pinpoint pH Controller Pinpoint pH Controller

    Pinpoint - American Marine

    Pinpoint pH Controller

    Pinpoint pH Controller by American Marine PINPOINT pH Controller™ is an inexpensive yet rugged controller, which includes the appropriate probe and calibration fluids. This device will automate another electrical device such as a calcium reactor or...

    $199.95
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  • Pinpoint Temperature Controller Pinpoint Temperature Controller

    Pinpoint - American Marine

    Pinpoint Temperature Controller

    Pinpoint Temperature Controller by American Marine. PINPOINT Temperature Controller™ is an inexpensive but rugged controller that can be used for a chiller or a heater; or both a chiller and a heater. Fully programmable setpoints. Farenheit only...

    $199.95
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  • IceCap Battery Backup v3.0 IceCap Battery Backup v3.0 IceCap Battery Backup v3.0 IceCap Battery Backup v3.0

    IceCap

    IceCap Battery Backup v3.0

    IceCap Battery Backup v3.0 for Aquarium Pumps When it comes to a power failure, it’s not a matter of if, but when. Fish and corals can perish in as little as 4 hours without water flow. The IceCap Battery Battery Backup Version 3.0 will keep your...

    $169.99
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  • Neptune Systems 1LINK Power and Communication Module Neptune Systems 1LINK Power and Communication Module Neptune Systems 1LINK Power and Communication Module

    Neptune Systems

    Neptune Systems 1LINK Power and Communication Module

    Neptune Systems 1LINK Power and Communication Module 1LINK™ – Easy, one-click installation The WAV is the first of a line of aquarium products from Neptune Systems that will use a completely new interface. While many in the aquarium...

    $169.99
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  • IceCap 4K Gyre Flow Pump Only IceCap 4K Gyre Flow Pump Only IceCap 4K Gyre Flow Pump Only IceCap 4K Gyre Flow Pump Only IceCap 4K Gyre Flow Pump Only

    IceCap

    IceCap 4K Gyre Flow Pump Only

    IceCap 4K Gyre Flow Pump Only The IceCap Gyre is back and better than ever! The all-new IceCap 4K Gyre Flow Pump is more powerful than its 3K predecessor.  Gyre 4K Pump Features & Benefits Unique Gyre Flow: Virtually Eliminates Dead...

    $159.99
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  • Milwaukee MC122 pH Controller Milwaukee MC122 pH Controller Milwaukee MC122 pH Controller Milwaukee MC122 pH Controller Milwaukee MC122 pH Controller

    Milwaukee Instruments

    Milwaukee MC122 pH Controller

    Milwaukee MC122 pH Controller. ACCURATE. SIMPLE. RELIABLE. 24/7 PH CONTROL. The Milwaukee MC122 PRO pH controller lets you measure and adjust pH levels automatically. WHAT PEOPLE ARE SAYING "I run this unit 24/7 and have not had any problems for the...

    $147.40
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  • Milwaukee MA887 Digital Refractometer Milwaukee MA887 Digital Refractometer Milwaukee MA887 Digital Refractometer Milwaukee MA887 Digital Refractometer Milwaukee MA887 Digital Refractometer

    Milwaukee Instruments

    Milwaukee MA887 Digital Refractometer

    Milwaukee MA887 Digital RefractometerThe MR series refractometers are precision optical instruments used for measuring aquarium water salinity. They work using principle of light refraction through liquid.Specifications:Range: PSU: 0 - 50 PPT: 0 -...

    $142.00
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  • Neptune Systems Energy Bar 4

    Neptune Systems

    Neptune Systems Energy Bar 4

    Neptune Systems Energy Bar 4   The EnergyBar 4 / EB-4 module features 4 independently controllable outlets. With power failure detection, active electrical current monitoring, and failsafe features make this power bar far better than any competing units...

    $125.99
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  • Neptune Systems AFS Automatic Feeding System Neptune Systems AFS Automatic Feeding System Neptune Systems AFS Automatic Feeding System Neptune Systems AFS Automatic Feeding System Neptune Systems AFS Automatic Feeding System

    Neptune Systems

    Neptune Systems AFS Automatic Feeding System

    Neptune Systems AFS Automatic Feeding System Great things happen when you combine the functionality of our proven Apex AquaController and the mechanics of a great autofeeding mechanism. It has long been known that feeding smaller amounts, more often, is...

    $115.99
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  • Neptune Systems Fluid Monitoring Module - FMM

    Neptune Systems

    Neptune Systems Fluid Monitoring Module - FMM

     Neptune Systems Fluid Monitoring Module - FMM FMM – FLUID MONITORING MODULEIT DOES SO MUCH! The FMM (Fluid Monitoring Module) is a multi-purpose module that, with the help of various accessories, enables your Apex to do: Flow...

    $109.99
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  • Neptune Trident Six-Month Reagent Kit

    Neptune Systems

    Neptune Trident Six-Month Reagent Kit

    Neptune Trident Six-Month Reagent Kit Neptune Systems recommends keeping on hand no more Trident reagent than you might expect to consume within the next 12 months. 6-month reagent kit (based on the default testing schedule of 4-Alk/2-Ca/2-Mg per...

    $109.99
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  • Neptune Systems Double Junction Lab Grade ORP Probe Neptune Systems Double Junction Lab Grade ORP Probe

    Neptune Systems

    Neptune Systems Double Junction Lab Grade ORP Probe

    Neptune Systems Double Junction Lab Grade ORP Probe Double junction probes place a second vessel inside the main electrolyte with a second internal junction. The means that even when the aquarium water eventually begins to make its way in the first...

    $104.99
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  • Milwaukee MC120 PRO pH Monitor Milwaukee MC120 PRO pH Monitor Milwaukee MC120 PRO pH Monitor Milwaukee MC120 PRO pH Monitor Milwaukee MC120 PRO pH Monitor

    Milwaukee Instruments

    Milwaukee MC120 PRO pH Monitor

    Milwaukee MC120 PRO pH Monitor DESCRIPTION The Milwaukee MC120 PRO High Range pH monitor offers lab grade accuracy with an easily viewable continuous check on pH levels with alarms. DESIGN FEATURES Fast easy to read results with large digital LCD...

    $99.95
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  • Neptune Systems Double Junction Lab Grade pH Probe Neptune Systems Double Junction Lab Grade pH Probe

    Neptune Systems

    Neptune Systems Double Junction Lab Grade pH Probe

    Neptune Systems Double Junction Lab Grade pH Probe Double junction probes place a second vessel inside the main electrolyte with a second internal junction. The means that even when the aquarium water eventually begins to make its way in the first...

    $94.99
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  • Pinpoint pH Monitor

    Pinpoint - American Marine

    Pinpoint pH Monitor

    Pinpoint pH Monitor by American Marine.The PINPOINT pH Monitor™ is in use by thousands of customers worldwide. This affordable unit remains the only full-time pH monitor with .01 resolution. The PINPOINT pH Monitor™ is sold complete with...

    $89.95
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  • Neptune Systems LSM Lunar Simulator Module

    Neptune Systems

    Neptune Systems LSM Lunar Simulator Module

    Neptune Systems LSM Lunar Simulator Module. 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...

    $74.99
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  • Red Sea MCP Test Kit Marine Care Master Red Sea MCP Test Kit Marine Care Master

    Red Sea

    Red Sea MCP Test Kit Marine Care Master

    Red Sea MCP Test Kit Marine Care Master.The Red Sea Marine Care Program Marine Care Test Kit includes easy to use tests for the accurate monitoring of all of the important parameters during the biological maturation of marine reef aquariums. Includes:...

    $74.99
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  • Red Sea Seawater Refractometer, High Accuracy Red Sea Seawater Refractometer, High Accuracy

    Red Sea

    Red Sea Seawater Refractometer, High Accuracy

    Red Sea Seawater Refractometer (Reef Spec) High Accuracy Most refractometers used within the aquarium hobby are not specifically designed for reef aquariums and use an algorithm for the measurement of brine (NaCl - rather than seawater) and at a...

    $74.99
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  • Hanna Instruments Marine Salinity Tester Hanna Instruments Marine Salinity Tester Hanna Instruments Marine Salinity Tester Hanna Instruments Marine Salinity Tester Hanna Instruments Marine Salinity Tester

    Hanna Instruments

    Hanna Instruments Marine Salinity Tester

    Hanna Instruments - Marine Salinity Tester Designed to bring simplicity to salinity testing during the any process, the HI98319 Marine Salinity Tester measures conductivity (EC) to determine the salinity of natural and artificial seawater. Within...

    Was: $79.99
    Now: $67.99
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  • Neptune Systems Flow Sensor - 1" with unions - FS100

    Neptune Systems

    Neptune Systems Flow Sensor - 1" with unions - FS100

    Neptune Systems Flow Sensor - 1" with unions - FS100 Usually used with a return pump, this flow sensor can be placed in line with the flow on any pipe, connected to the FMM, and communicate to your Apex the flow rate of water through that pipe. The...

    $65.99
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  • Neptune Systems LLS Liquid Level Sensor - 15 Inch Neptune Systems LLS Liquid Level Sensor - 15 Inch Neptune Systems LLS Liquid Level Sensor - 15 Inch

    Neptune Systems

    Neptune Systems LLS Liquid Level Sensor - 15 Inch

    Neptune Systems LLS Liquid Level Sensor - 15 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...

    $64.99
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  • 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
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  • Hanna HI702 High Range Copper Checker Hanna HI702 High Range Copper Checker Hanna HI702 High Range Copper Checker Hanna HI702 High Range Copper Checker

    Hanna Instruments

    Hanna HI702 High Range Copper Checker

    Hanna High Range Copper Checker - HI702 The HI702 Checker®HC (Handheld Colorimeter) is a simple, accurate, and cost effective way to measure high ranges of copper. Designed as a more accurate alternative to chemical test kits, the HI702 provides...

    Was: $64.95
    Now: $55.21
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  • Hanna HI713 Phosphate Checker Hanna HI713 Phosphate Checker Hanna HI713 Phosphate Checker

    Hanna Instruments

    Hanna HI713 Phosphate Checker

    Hanna Phosphate Checker HI713 The HANNA HI 713 CheckerHC bridges the gap between simple chemical test kits and professional instrumentation. Chemical test kits are not very accurate and only give only a few resolution points while professional...

    Was: $64.95
    Now: $55.21
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  • Hanna HI721 Iron Checker Hanna HI721 Iron Checker Hanna HI721 Iron Checker

    Hanna Instruments

    Hanna HI721 Iron Checker

    Hanna Iron Checker HI721 For use in fresh and saltwater The new HI 721 Checker HC portable handheld colorimeter features a resolution of 0.01 ppm (500 points) and 0.04 ppm 2% of reading accuracy. The HI 721 CheckerHC uses an adaptation of Standard...

    Was: $64.95
    Now: $55.21
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  • Hanna HI736 Phosphorous Checker, Ultra Low Range Hanna HI736 Phosphorous Checker, Ultra Low Range Hanna HI736 Phosphorous Checker, Ultra Low Range Hanna HI736 Phosphorous Checker, Ultra Low Range

    Hanna Instruments

    Hanna HI736 Phosphorous Checker, Ultra Low Range

    Hanna Phosphorous Checker, Ultra Low Range HI736 The HANNA HI 736 Checker HC bridges the gap between simple chemical test kits and professional instrumentation. The HANNA HI?736 is both accurate and affordable.The HI 736 CheckerHC portable handheld...

    Was: $64.95
    Now: $55.21
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  • Hanna HI772 Marine Alkalinity dKH Checker Hanna HI772 Marine Alkalinity dKH Checker Hanna HI772 Marine Alkalinity dKH Checker Hanna HI772 Marine Alkalinity dKH Checker

    Hanna Instruments

    Hanna HI772 Marine Alkalinity dKH Checker

    Hanna Marine Alkalinity dKH Checker HI772 Features at-a-glance: Easier to use and more accurate than chemical test kits Dedicated to a single parameter Small size, big convenience Ideal for: Aquaculture & Aquariums, Water Quality  HI772...

    Was: $64.95
    Now: $55.21
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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...

    Was: $64.95
    Now: $55.21
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  • 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...

    Was: $64.95
    Now: $55.21
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  • 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...

    Was: $64.95
    Now: $55.21
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  • 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...

    Was: $64.95
    Now: $55.21
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60 of 137 Items

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