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    Replacement slides for the Seneye Reef Monitor.  Seneye slides should be replaced monthly for accurate readings. Slides come in Packs of 3

    $34.99

    …pH, monitoring. Set reminders, log testing and dosing information and much more Included WiFi lets you now connect to the internet even easier. With the Fusion Cloud interface everything is easier from calibrating probes, to customizing outlets. Fusion gives you the ability to monitor and control…

    $799.95

    Neptune Systems tested many probes until they found a manufacturer that would provide long life as well as consistent and accurate performance. Lab grade probes are held to tighter standards and use higher quality materials allowing a longer life, and holding calibration longer than standard grade…

    $59.95 $29.95

     Seneye Reef Pack is an all in one monitor for Temperature, Ammonia, pH, Water level, and Lighting.  With a PC you can connect your Seneye monitor directly to any PC or Seneye Web Server to monitor your aquarium.  With the Seneye Web Server you can monitor your aquarium from anywhere you can get…

    $199.99

    Sit back and enjoy the beauty of your aquarium while monitoring your tanks vital parameters on your Smart Phone, Laptop, or Tablet.  The Seneye Web Server allows any Seneye monitor to connect to your homes network, without having to connect the Seneye USB directly to your Laptop. With simple network…

    $199.99

    With the amazing Kill A Watt you´ll know “Watts” killing you. Monitoring your power consumption will allow estimate how much your tank will cost you in electrical usage. By plugging in your electrical devices the Kill a Watt will tell you how many amps, and watts your pump, heater, or any 120v…

    $24.99 $21.24

    All the tests you need in one kit to monitor the biological maturation of your new reef tank or on-going maintenance of an established tank. Kit includes: 100 Ammonia test kits 100 Nitrate test kits 60 Nitrite test kits 100 pH test kits 55 Alkalinity test kits Analytical grade glass vials

    $56.99

    The American Marine Pinpoint pH Controller will monitor and control pH levels in an aquarium. This pH controller controls pH in an upward and downward direction. With proper care this Pinpoint pH Controller should last a lifetime.

    $219.99 $186.99

    The DM-2EC In-Line Dual Electrical Conductivity Monitor is ideal for RO systems, where you may want to monitor an input and output reading from a filtration system. Measures EC (Electrical Conductivity) in µS (micro-Siemens) Stronger, water-resistant casing Digital Calibration XL LCD Display…

    $59.95 $50.96

    Features 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 Advanced Sensors Module PAR sensor hides nicely in aquarium inside Real Reef Rock Fine tune your lighting to…

    $299.95

    The Milwaukee MC122 pH Controller monitors and controls an aquariums pH. Milwaukee Instruments offers the most affordable pH and ORP aquarium equipment. The attractive price and high quality has made Milwaukee an increasingly popular choice for reef hobbyists.

    $125.95

    The Milwaukee pH600 pH Pen is an economical easy to use meter that returns quick, reliable pH measurements.

    $22.99

    The FMM (Fluid Monitoring Module) is a multi-purpose module that, with the help of various accessories, enables your Apex to do: Flow Monitoring Leak Detection Water Level Detection Power 24VDC accessories Future sensors

    $99.95

    If you want to monitor and control your Apex quickly, from outlet status, float locations, enabling feed modes, and much more but dont want to pull out your smart phone or computer ever time, the Display Module is what you need. Grey case matches new Apex system Orange back-lit LCD display 7 soft…

    $99.95

    …your Seneye module directly to a computer.  The WiFi web server allows you to use your Smart Phone, PC, or Laptop to monitor your aquariums parameters. Automatically monitors multiple key parameters Constantly watching your aquarium, 5600 readings per month Healthier coral, integrated LUX, Kelvin…

    $469.99

    …through, or wires for float switches. The Sapphire, Ruby, and Emerald line of ATO reservoirs have laser engraved water level markings so you can monitor how much water your tank is using. Dimensions: 6” long x 14” wide x 15” tall - Overall reservoir size 3 7/8" long x 6 3/8" wide - Opening to refill…

    $114.99 $97.74

    Add the Lunar Simulator Module and LED strings to your Apex Unit from Neptune to create a true lunar cycle to your reef aquarium. Module and LED Strings sold separately LED Strings available in 2, 3, 4 or 5 LEDs per string High intensity LEDs with a wide angle lenses (100+ degrees) to provide the…

    Starting at:
    $29.95

    The FM-2 RO Filter Monitor with Volumizer tracks up to five filter stages at once by time and volume. The monitor allows you to create filter change points at each stage at an individual point in the future or at a specific water volume. When the pre set points are reached the FM-2 will alert you…

    $39.99 $33.99

    Milwaukee Calibration Solution sold in single use packets are great for calibrating your pH probe or pen. Many pH probes will start to loose their calibration in as short as a month or two depending on your probe. We suggest calibrating probes every 30-60 days for the most reliable readings.…

    Starting at:
    $0.99

    Know Your Flow! 2" Flow Sensor for the Fluid Metering Module from Neptune.  The FS-200 will work with flow rates from 300-3000 gph, and will connect to any standard 2" Slip PVC.

    $99.95

    Add leak detection to your Neptune Apex Controller Neptune's LDK (Leak Detection Kit) includes everything you will need to add leak sensors to your Apex Controller within minutes. Includes two leak sensors Compatible with all Apex models Powered through Aquabus connection Add up to four total leak…

    $149.95

    The American Marine PINPOINT Salinity Monitor will immediately give an accurate measure of salt levels in any aquarium. The reading is fully temperature compensated. With proper care this PINPOINT Salinity monitor should last a lifetime.

    $129.99 $110.49

    Waterproof pH, Electrical Conductivity, Total Dissolved Solids, and Temperature Metering Pen Highly Accurate readings right out of the box! Every HI98129 is professionally calibrated to 7.01 and 10.01pH and 1382ppm. Lightweight Floats Super Accurate Large LCD Display Measures Temperature Replaceable…

    $157.99 $134.29

    Standard Grade pH probe for Vertex Cerebra Controllers. Includes BNC Connection that will work with almost any type of pH controller or monitor that utilizes a BNC Connection. Made in Germany Reliable Quality Materials Quality Craftsmanship Manufacturing date labeled on packaging   Note: Calibration…

    $49.99 $39.99

    Add additional control to your Neptune Apex Neptune Systems Energy Bar 8. This is NOT just a power strip. 8 Independently Controlled Outlets 6 rated at 5A@120V AC 2 rated at 10A@120V AC 16-Gauge, powder-coated aluminum construction - best protection against a catastrophic failure Energy consumption…

    $159.95

    Support up to 11 EcoTech VorTech Pumps - simultaneously with the Neptune Systems VorTech Wireless Expansion Module: WXM Add this module to your Apex Controller and control multiple VorTech Propeller pumps and Radion LEDs based on time of day, feed mode, power outage mode and so much more. Complete…

    $124.95

    …making quality monitoring electronics for years and is the only full time pH monitor with the ability to give a .01 resolution.  With proper care and maintenance the Pinpoint pH monitor should last a lifetime. The American Marine PINPOINT pH Monitor is the only full-time pH monitor with .01…

    $94.99 $80.74

    The Milwaukee MW500 ORP Monitor is a low cost, high quality and reliable ORP monitor. The Milwaukee MW500 ORP Monitor ships complete with an ORP probe, calibration solution, a 9V battery, instruction manual and a screwdriver for easy calibration.

    $102.00

    The Milwaukee MC120 pH Monitor with AC adapter and LED alarm features a visible alarm that displays when pH levels reach set points.

    $109.99

    …through your display, reactors, refugiums or anything else that you is plumbed into your system.  The Flow Monitoring Kit (FMK) will unlock a world of control for any apex model! Flow Monitoring Kit Includes: FMM Module 1" FS-100 Flow Sensor 1/2" FS-50 Flow Sensor (Two Included) Two 1" Unions Four…

    $199.95