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HM Digital PH-80 Handheld Digital pH Meter

HM Digital PH-80 Handheld Digital pH Meter

The PH-80 is an economically priced, reliable pH meter that is ideal for testing applications such as hydroponics & gardening, pools & spas, aquariums & reef tanks, water ionizers, drinking water and more. Featur...

$59.99
Digital Aquatics RKM SL-1 Module

Digital Aquatics RKM SL-1 Module

Multiple Inputs The RKM-SL1s five input ports provide a broad range of monitoring options for all the most common probes. 1 x pH port: The pH port is a standard BNC connection. While any standard probe should work, we suggest u...

$69.99
Hanna Instruments Checker Colorimeter Kit (Phosphate, Calcium, Alkalinity & pH)

Hanna Instruments Checker Colorimeter Kit (Phosphate, Calcium, Alkalinity & pH)

The Hanna Checker Kit includes 4 of the most commonly used Hanna Checkers used in the Marine Aquarium. Includes: Phosphate Checker Calcium Checker Alkalinity Checker pH Checker ...

$187.99
Neptune Systems Advanced Leak Detection Module

Neptune Systems Advanced Leak Detection Module

The Advanced Leak Detection module easily connects to any Neptune Apex System (Apex, Lite, or Jr.) and gives you up to four locations of leak detection. Two different types of leak detection probes are available (sold separate...

$74.95
Neptune Systems AquaController Apex Jr w/ Display & Temperature Probe

Neptune Systems AquaController Apex Jr w/ Display & Temperature Probe

Apex Jr System The Apex Jr System delivers a professional quality controller at hobbyist prices. Built-in Ethernet Integrated Ethernet port Most advanced web server available Interactive graphing application in...

$219.99
Digital Aquatics Lifeguard v2.0 Aquarium Monitor

Digital Aquatics Lifeguard v2.0 Aquarium Monitor

Not ready for a controller? Protect your tank with Lifeguard™ by Digital Aquatics. Reliable monitoring and protection. Digital Aquatics’ Lifeguard™ monitoring system protects your aquarium by monitoring the three parameters ...

$219.99
Neptune Systems Leak Detection Probe - Low Profile

Neptune Systems Leak Detection Probe - Low Profile

This leak detection probe, when combined with the ALD (Advanced Leak Detection) Module, will enable your Apex System to alert on any leak or water on the floor. This particular probe is very low profile and is perfect for slidin...

$29.95
American Marine Pinpoint Salinity Monitor

American Marine Pinpoint Salinity Monitor

American Marine PINPOINT Salinity Monitor PINPOINT Salinity Monitor™ will accurately and immediately measure the amount of salt in any marine or freshwater system. The reading is fully temperature compensated and the convers...

$136.99
Neptune Systems Dual 120V Socket Expansion

Neptune Systems Dual 120V Socket Expansion

The Socket Expansion box is a small power strip with controllable 2 outlets used to reduce the power load on a direct connect (DC) box. Since power is supplied from a different circuit, the Direct Connect box`s power budget is not...

$49.99
HM Digital Waterproof pH Meter

HM Digital Waterproof pH Meter

Professional Waterproof pH/Temp Meter Very reliable waterproof pH meter measures with an accuracy: of +/- 0.02 pH. Measures pH and Temperature Auto-ranging three point calibration with digital fine tuning Includes 4...

$79.99
15 ft. AquaBus Extension Cable (Male/Female) Neptune Systems AquaController

15 ft. AquaBus Extension Cable (Male/Female) Neptune Systems AquaController

15’ Male/Female AquaBus cable.  Extension Aquabus cable used to lengthen AquaBus cables so that modules which are more than 15’ apart can be connect together.

$19.99
Hanna Instruments Waterproof pH Tester with Replaceable Electrode

Hanna Instruments Waterproof pH Tester with Replaceable Electrode

When HANNA instruments introduced its first version of the pHep (pH electronic paper) in 1986, it immediately revolutionized the standard in pH measurement. pHep`s ease-of-use in combination with its affordability made it possible...

From $84.99
American Marine Pinpoint pH Controller

American Marine Pinpoint pH Controller

American Marines PINPOINT pH Controller 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 c...

$243.99
Digital Aquatics RKM-Net Network Interface Module

Digital Aquatics RKM-Net Network Interface Module

Email Get alerts to your email, cell phone, or PDA System Status Current system data and channel status over the internet, gives you real-time information about what's going on in your system. RSS feeds Get on going status...

$119.99
Hanna Instruments Combination pH and ORP Tester

Hanna Instruments Combination pH and ORP Tester

The newest member to Hanna instruments Combo series of combination waterproof testers with advanced functions is HI 98121, designed for simultaneous pH and ORP measurements. HI 98121 also reads temperature, which is continuously ...

$148.99
Digital Aquatics RKM-HUB Bus System

Digital Aquatics RKM-HUB Bus System

5 x Bus Ports The HUB has 5 bus ports for easy expansion when the traditional daisy chain is not an option. 1 x Power Port 9VDC input voltage for providing additional power to your system. Tech Specs LED Status Indic...

$39.99
HM Digital Waterproof EC / TDS / Temp Combo Meter

HM Digital Waterproof EC / TDS / Temp Combo Meter

COM-100: Waterproof EC / TDS / Temp Combo Meter Ideal for all water quality testing, water purification applications, wastewater regulation, aquaculture, hydroponics, colloidal silver, labs & scientific testing, pools &a...

$59.99
American Marine Pinpoint ORP Controller

American Marine Pinpoint ORP Controller

American Marine PINPOINT ORP Controller PINPOINT ORP (REDOX) Controller™ is an inexpensive rugged controller complete with a platinum ORP probe. This device will automate another electrical device like an ozonizer or ozone g...

$236.99
American Marine Pinpoint Conductivity Monitor

American Marine Pinpoint Conductivity Monitor

American Marine PINPOINT Conductivity Monitor PINPOINT Conductivity Monitor™ is an instrument for the measurement of hardness in freshwater. The conversions are 33 µS=17.9 ppm=1dH. Good quality reverse osmosis water measures...

$124.49
Digital Aquatics RKM-SW5 Switch 5

Digital Aquatics RKM-SW5 Switch 5

4 X Switch Ports With four switch input ports you can add another level of automation to your tank/system. Add float switches, leak detectors, ATO systems, and much more! IMPORTANT: Never apply power to the switch inputs. They ...

$69.99
Digital Aquatics PC1 Power Controller Module

Digital Aquatics PC1 Power Controller Module

Increased Power Handling The PC1 is useful for controlling those high current devices like chillers and large lighting fixtures. The PC1 can supply up to 15A (10A inductive) to one or more devices. Both outlets controlled as on...

$69.99
Hanna Instruments Combo pH/EC/TDS/Temperature Tester with Low Range EC

Hanna Instruments Combo pH/EC/TDS/Temperature Tester with Low Range EC

The HI 98129 Combo waterproof tester offer high accuracy pH, EC/TDS and temperature measurements in a single tester! No more switching between meters for your routine measurements. The waterproof Combo (it even floats) has a large...

$152.99
Hanna Instruments Low Range Phosphate Meter

Hanna Instruments Low Range Phosphate Meter

Phosphates are particularly important for the growth and development of plant roots, and hence are one of the most common fertilizers used in agriculture. In addition, phosphates are usually utilized in detergents and are needed, ...

$212.99
Duo-ORpH Controller (Probe not Included)

Duo-ORpH Controller (Probe not Included)

Dual monitoring of pH and ORP with a large LED display and control of either pH or ORP. Highly accurate. Digital pH-ORP controller with large size LED display for easy reading. High input impedance avoid measuri...

$149.99
HM Digital Waterproof ORP Meter

HM Digital Waterproof ORP Meter

ORP-200: Waterproof ORP Meter Ideal for all ORP testing, including anti-oxidant measurement, water purification applications, ionizers, agriculture, aquariums & aquaculture, chlorine monitoring, cooling tower disinfection, e...

$87.99
26 - 50 of 64
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