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    …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…

    $209.99 Regular Price: $

    …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…

    $799.95 Regular Price: $

    …Constantly monitors water temperature, so you can get an alert if your heater breaks or your chiller fails Free Ammonia Monitors the highly toxic free ammonia (NH3) at very low levels, so you can stop your fish from dying from Ammonia poisoning.   pH The seneye monitors pH in…

    $499.99 Regular Price: $

    …in the event water comes in contact with its sensor pads. It is extremely sensitive and we have found they even work with RODI water. The Watchdog monitor is small enough to slip between sumps and stands, or the wired sensor can be placed in even tighter locations. A single 9V battery (not included)…

    $12.99 Regular Price: $

    The Milwaukee MW500 ORP Monitor is a low cost, high quality and reliable ORP monitor. 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 aquarists. Milwaukee Smart meters are…

    $110.99 Regular Price: $

    …overflow like the Eshopps Eclipse, but in some situations, a HOB style overflow may be the best option. Hang on back overflows do require more monitoring and safety precautions to be in place, but can be completely reliable if installed properly and maintained regularly. Installation only takes…

    $169.99 Regular Price: $

    …to get up and running. The ApexEL forgoes a few of the included features that are included with the standard Apex model, like salinity monitoring, ORP monitoring, and variable speed ports, but they can easily be added with Neptune Systems accessory modules.  Included WiFi lets you now…

    $499.95 Regular Price: $

    …power you are actually using with the Kill A Watt PS-10 Power Strip. The power strip gives you 10 surge-protected outlets that will let you monitor Voltage, Amperage, KWH, Current Leakage, and much more! From real-time instant to time elapse consumption readings the Kill A Watt PS-10 is designed…

    $69.99 Regular Price: $

    The Milwaukee MC510 ORP Controller monitors and controls aquarium ORP levels. 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 aquarists. Milwaukee Smart meters are…

    $144.99 Regular Price: $

    Why does BRS recommend this? Pinpoint has been making quality monitoring equipment for years and is the only full-time pH monitor with the ability to give a .01 resolution.  The Pinpoint pH monitor is extremely easy to use and can be counted on to deliver accurate, reliable results with…

    $94.99 Regular Price: $

    Automatically Monitor, Maintain, and Control your Aquariums Alkalinity! The KH Director is the result of more than 2 years of research and development into the automated Alkalinity monitoring and control department. As always, GHL has stuck to the fundamental belief in high quality and…

    $869.90 Regular Price: $

    …overflow like the Eshopps Eclipse, but in some situations, a HOB style overflow may be the best option. Hang on back overflows do require more monitoring and safety precautions to be in place, but can be completely reliable if installed properly and maintained regularly. Installation only takes…

    $126.99 Regular Price: $

    …one of the most useful tools for ensuring your RO or RO/DI system is functioning at its best. A TDS meter can not only provide peace of mind in monitoring your final product water, but it can also clue you in to when it's time to replace filter media. The Titanium S3 model features three remote TDS…

    $44.99 Regular Price: $

    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 preset points are reached the FM-2 will alert you…

    $39.99 Regular Price: $

    Automatically Monitor, Maintain, and Control your Aquariums Alkalinity! The KH Director is the result of more than 2 years of research and development into the automated Alkalinity monitoring and control department. As always, GHL has stuck to the fundamental belief in high quality and…

    $869.90 Regular Price: $

    …take your Seneye monitor and make it look like new.  Seneye Cleaner can clean off almost any caked on algae or mineral build up from the monitor.   Simply fill a glass of water and empty the non-toxic crystals into the glass.  Then place the Seneye monitor into the glass and…

    $29.99 Regular Price: $

    …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. PINPOINT Salinity Monitor Features: * Includes…

    $129.99 Regular Price: $

    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…

    $59.95 Regular Price: $

    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…

    $299.99 Regular Price: $

    …outlets. Fusion gives you the ability to monitor and control your Apex from anywhere in the world.   Apex Control System The new Apex's Head Unit now includes the ability to have salinity monitoring, pH, ORP, and Temperature monitoring right out of the box. The completely new…

    $399.95 Regular Price: $

    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 aquarists. Milwaukee Smart meters are manufactured to be easy to use, practical and accurate. They are ideal for saltwater…

    $109.99 Regular Price: $

    If you wish to continuously monitor your light throughout the day and night, the float accessory allows you to float the any Seneye device at the top of the water. * Compatible with all Seneye devices * Great for Sumps, Aquariums, and Ponds * Use for continuous light readings

    $25.99 Regular Price: $

    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 Regular Price: $

    If you want to monitor and control your Apex quickly, from outlet status, float locations, enabling feed modes, and much more but don't want to pull out your smartphone or computer ever time, the Display Module is what you need. * Grey case matches new Apex system * Orange backlit LCD…

    $99.95 Regular Price: $

    …LCD display * Multi-event 7 day/24 hour timer * Easy to program   P3 International makes high-quality electronic monitoring and controlling equipment. Control lights, pumps, water change stations, fans and much more with the Save A Watt Digital Timer. The easy to program…

    $34.95 Regular Price: $

    …time. Using an NTC thermistor sensor, the Checktemp has multiple different uses for measuring liquids, air, and even semi-solid products. The monitor has a large LCD display and with CALcheck the system will go through a self-check every time the system starts up it will give you a visual…

    $39.00 Regular Price: $

    …The Red Sea multi test kits are by far the best value for purchasing multiple test kits. Amazing Value. High quality and reliability. Monitor nutrient levels to prevent algae and promote healthy corals. This kit combines two essential tests in one – Nitrate and Phosphate. *…

    $59.99 Regular Price: $

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

    $35.99 Regular Price: $
    Out of Stock

    …saltwater aquariums but most notably is used with Ultra Low Nutrient Systems (ULSN) like the Zeovit system. When using ZEOmix it is imperative to monitor water parameters, and add back necessary nutrients and elements that will be absorbed and collected by the zeolite media.   Two…

    $11.99 Regular Price: $

    …controller and probe with a +/- 1°F difference from its set point. Stay Alert Controllers are equipped with an alarm system that alerts any malfunction. Monitor your chiller's performance visibly via the LED which alerts you to any problems.   JBJ Arctica Owners Manual

    $495.47 Regular Price: $

    …heater is only as good as the controller telling it when to turn on and off. The BRS Titanium Heater Elements require a temperature controller to monitor your tank's temperature, and power the heaters on and off as needed. We really like to use the Bulk Reef Supply Aquarium Heater Controller to…

    $45.99 Regular Price: $

    …controllers like an Apex or a ReefKeeper. Every pump also includes its own onboard LED interface with an intelligent operating condition monitoring system that keeps the pump running longer without maintence. Every 24 hours the pump automatically performs an 8-second backflushing operation…

    $354.99 Regular Price: $