CONTROL & TESTING (381)
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  • Hydros Start
    $329.90

    OUT OF STOCK

    No reviews

    A Great Start in Aquatic Monitoring and Control  The HYDROS Start is the perfect first aquarium controller, expertly designed to...

  • ITC M Rack Magnetic Puk
    $32.99

    OUT OF STOCK

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    M-Rack: One Magnet, Endless Possibilities M-Rack is a versatile magnetic mounting system for your aquarium. It brings a stylish, practical...

  • Milwaukee MC120 pH Monitor w/probe - OPEN BOX RETURN
    $99.15 $116.65
    No reviews

    OPEN BOX RETURN - Save 15% Professional pH monitor especially designed for use with aquariums. User selectable Hi/Low Set Point...

  • Dalua Illumagic Pixel & Vitamini 24-Hour Auto Scheduler Dimmer
    $34.95
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    Dalua Illumagic Pixel & Vitamini 24-Hour Auto Scheduler Dimmer The Dalua Illumagic Pixel & Vitamini 24-Hour Auto Scheduler Dimmer provides...

  • Hanna Instruments Marine Algae & Nutrient Management Kit
    $169.99
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    Hanna Instruments Marine Algae & Nutrient Management Kit Easy-to-read, instant digital results Compact and portable Simple one-button designs and straightforward...

  • Hanna HI 98319 Waterproof Salinity Tester- OPEN BOX RETURN
    $63.99 $79.99
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    OPEN BOX RETURN- SAVE 20% SEEMS UNUSED BUT MIGHT HAVE SOME MISSING REAGENTS   Designed to bring simplicity to salinity...

  • ITC Reefculture PARwise PRO Light Meter
    $379.99
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    Understanding Lighting with the PARwise PRO The PARwise PRO is an advanced light meter that revolutionizes aquarium lighting management. Its...

  • API Freshwater/Saltwater KH Carbonate Hardness Test Kit
    $13.95
    No reviews

    The API KH TEST KIT tests fresh or saltwater aquariums for carbonate hardness (KH), and helps monitor water quality and...

  • Fauna Marin AquaHomeTest NO2+NO3 Reagent A
    $7.69
    No reviews

    Fauna Marin AquaHomeTest NO2+NO3 Refill - Reagent A Refill Reagent A for Fauna Marin AquaHomeTest NO2+NO3.   Safety Note:  Solution...

  • Fauna Marin Aquahometest PO4
    $40.69

    OUT OF STOCK

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    Measure Phosphate in Reef Aquariums The Fauna Marin Phosphate Test can determine the phosphate concentration within a reef aquarium with...

  • Fauna Marin Aquahometest K - Potassium
    $43.99

    OUT OF STOCK

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    Measure Potassium in Reef Aquariums Fauna Marin’s Potassium Test Kit is a new standard for detecting potassium in saltwater aquariums....

  • Red Sea MCP Magnesium Test - 75 tests
    $28.99
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    Red Sea MCP Magnesium Test - 75 tests Accurate measurement of Magnesium in marine aquariums Mg   Red Sea’s user-friendly...

  • Red Sea MCP Phosphate Test - 100 tests
    $28.99

    OUT OF STOCK

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    Red Sea MCP Phosphate Test - 100 tests User-friendly colorimetric test provides a quick and reliable measurement of Phosphate in...

  • Red Sea MCP Calcium Test - 75 tests
    $26.99
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    Red Sea MCP Calcium Test - 75 tests User-friendly titration test provides a quick and reliable measurement of calcium in...

  • Red Sea MCP NO2/NO3 Test - 60/100 tests
    $26.99
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    Red Sea MCP NO2/NO3 Test - 60/100 tests Provides 50 Nitrate plus 50 Nitrite advanced colorimetric tests for marine aquariums...

  • Red Sea MCP Ammonia Test - 100 tests
    $23.99
    No reviews

    Red Sea MCP Ammonia Test - 100 tests Accurate measurement of ammonia in marine aquariums NH3 | NH4   Red...

  • Red Sea MCP pH/Alk Test - 100/55 tests
    $23.99
    No reviews

    PH/ALKALINITY MARINE TEST KIT Includes an accurate titration test for KH and a colorimetric test for pH for monitoring these...

  • Triton N-DOC Test
    $49.00

    OUT OF STOCK

    No reviews

    TRITON N-DOC Laboratory Seawater Analysis Comprehensive testing for Nitrogen and Dissolved Organic Carbon   Next level organic and nutrient analysis,...

  • Dymax Refractometer
    $71.49
    No reviews

    Easy to Read Dymax RF-20 Sea Water Refractometer Salinity refers to the amount of salt concentration in water. Different salt...

  • IceCap Magnetic Aquarium Test Kit Mixer
    $29.99
    No reviews

    Effortless Water Testing The IceCap Magnetic Aquarium Test Kit Mixer is a simple solution for efficiently mixing water test reagents....

  • IceCap Heater Controller
    $65.99
    No reviews

    Aquarium Heater Controller The IceCap heater controller can connect up to two heating elements (sold separately) and provides precise temperature...

  • Reef Kinetics Reefbot Dosing Syringes(10ml)Set of 10
    $29.99

    OUT OF STOCK

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    Reef Kinetics Reefbot Dosing Syringes(10ml) - Set of 10

  • Reef Kinetics Reefbot 60 ml vial
    $9.99
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    Reef Kinetics Reefbot 60 ml vial - Single unit

  • Reef Kinetics Reefbot Replacement Magnetic Stirrers
    $25.00
    No reviews

    Reef Kinetics Reefbot Replacement Magnetic Stirrers for chambers and 60ml Vials (Set of 10)

  • Reef Kinetics Reefbot Replacement Needles
    $20.00
    No reviews

    Reef Kinetics Reefbot Replacement Needles - Set of 10

  • Reef Kinetics Reefbot Lab - Automated Testing v.7
    $1,049.00 $1,499.00

    OUT OF STOCK

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    The ReefBot Lab is the latest ReefBot model with enhanced design and features, including 12 vials for more testing options....

  • Fauna Marin AquaHomeTest NO2+NO3 Reagent C
    $7.69

    OUT OF STOCK

    No reviews

    Fauna Marin AquaHomeTest NO2+NO3 Refill - Reagent C Refill Reagent C for Fauna Marin AquaHomeTest NO2+NO3.   Safety Note:  Solution...

  • Fauna Marin AquaHomeTest NO2+NO3 Reagent B
    $7.69
    No reviews

    Fauna Marin AquaHomeTest NO2+NO3 Refill - Reagent B Refill Reagent B for Fauna Marin AquaHomeTest NO2+NO3.   Safety Note:  Solution...

  • Fauna Marin Refill Aquahometest Ca+Mg
    $30.79
    No reviews

    Fauna Marin AquaHomeTest Ca+Mg Refill Refill Reagents for Fauna Marin AquaHomeTest Ca+Mg.   Safety Note:  Solution A can cause skin...

  • Fauna Marin Refill Aquahometest PO4
    $14.29

    OUT OF STOCK

    No reviews

    Fauna Marin AquaHomeTest PO4 Refill Refill Reagents for Fauna Marin AquaHomeTest PO4.   Safety Note:  Solution A may cause skin...

  • Fauna Marin Refill Aquahometest K - Potassium
    $27.49

    OUT OF STOCK

    No reviews

    Fauna Marin AquaHomeTest K Potassium Refill Refill Reagents for Fauna Marin AquaHomeTest K (Potassium).   Safety Note:  Flammable liquid and vapor....

  • Fauna Marin Refill Aquahometest KH
    $14.29

    OUT OF STOCK

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    Fauna Marin AquaHomeTest KH Refill Refill reagent for the Fauna Marin AquaHomeTest KH.   Safety Note:  Flammable liquid and vapor....

  • IceCap Bottle Caddy
    $42.34
    No reviews

    Durable acrylic bottle caddy holds ten 37mm diameter bottles and includes four 25.5mm diameter reducers for smaller bottles.   The...

  • Hanna Filter holder with Luer lock
    $18.99
    No reviews

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

  • Hanna 10 mL syringe with Luer lock
    $9.99
    No reviews

    Hanna 10 mL syringe with Luer lock

  • Hanna Filter disc (25 pcs)
    $9.99
    No reviews

    HI740228 is a filter disc; part of accessory kit for preparation of samples to be analyzed (nutrients for agriculture) with...

  • Icecap Salinity/Temperature Digital Pocket Tester
    $87.99
    No reviews

    ELIMINATE THE UNCERTAINTY ASSOCIATED WITH MECHANICAL REFRACTOMETERS The IceCap SPT03 Digital Pocket Tester is a portable, rugged, water resistant device...

  • API Copper Test Kit For Freshwater and Saltwater Fish Aquariums
    $12.48
    No reviews

    Copper Test Kit - Freshwater/Saltwater Copper, a common treatment for many parasitic infections, must be monitored in an aquarium or...

  • Neptune Systems Flow Sensor - 1/2" with adapters
    $34.99
    No reviews

    Flow Sensor – 1/2″  (FS-50) Usually used with aquarium accessories like reactors, carbon/GFO filters, etc., this flow sensor can be...

  • Neptune Systems Flow Sensor - 1" with unions
    $65.99
    No reviews

    Flow Sensor – 1″  (FS-100) Usually used with a return pump, this flow sensor can be placed in line with...

  • Neptune Systems Flow Sensor - 2" with unions
    $109.99
    No reviews

    Flow Sensor – 2″ (FS-200) Usually used with a return pump, this flow sensor can be placed in line with...

  • Neptune PAR Monitoring Kit
    $339.99

    OUT OF STOCK

    No reviews

    Features and Benefits: Performs continuous light-level monitoring for your aquarium Measures actual PAR – the light corals and plants use...

  • NYOS Phosphate Reefer Test Kit
    $24.99
    No reviews

    High sensitivity seawater phosphate test kit highly sensitive reagents professionally calibrated colour chart differentiated colour gradations precise sliding comparator sample...

  • NYOS Carbonte Hardness/ KH Test Kit
    $14.99
    No reviews

    High sensitivity seawater carbonate hardness test kit easy usable drop test stable titration reagent precise colour change separate indicator and...

  • NYOS Calcium Reefer Test Kit
    $19.99
    No reviews

    High sensitivity seawater calcium test kit easy conversion factor accurately to 5mg/l precise dosing tip precise colour change separate indicator...

  • D-D Seawater Refractometer
    $69.99
    No reviews

    D-D True Seawater Refractometer   Hand held instrument for the measurement of the TRUE Salinity and Specific Gravity (S.G.) of...

  • Lifegard Aquatics LED Digital Thermometer
    $32.44
    No reviews

    LIFEGARD® AQUATICS continues to innovate on their breakthrough technology with the development of the industry’s first submersible LED Digital Thermometer....

  • Red Sea Algae Control Multi Test Kit (NO3/PO4)
    $74.99
    No reviews

    Algae Management Program Controlled reduction of nitrates and phosphates, prevents nuisance algae  & enhances coral coloration   Algae Management Program...

  • Red Sea Iodine Pro (I2) High accuracy analytical test kit
    $54.99

    OUT OF STOCK

    No reviews

    Iodine Pro Test Kit High accuracy measuring of total iodine level in your reef aquarium I2   Red Sea’s Iodine...

  • Red Sea Phosphate Pro (PO4) High Definition comparator test
    $54.99
    No reviews

    Phosphate Pro Test Kit Exceptionally high accuracy colorimetric comparator tests  for Phosphate measurement PO4   Red Sea’s Phosphate Pro Test...

  • Red Sea Nitrate Pro (NO3) - High Definition comparator test
    $54.99
    No reviews

    Nitrate Pro Test Kit Exceptionally high accuracy colorimetric comparator tests for Nitrate measurement NO3   Red Sea’s Nitrate Pro Test...

  • Red Sea Magnesium Pro - High accuracy Titration Test Kit
    $41.99
    No reviews

    Magnesium Pro Test Kit Advanced titration magnesium test kit Mg     Red Sea’s Magnesium Pro Test Kit is an...