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Aquarium Supplies
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51 - 75 of 79
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...

$82.49
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, ...

$222.99
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...

$66.99
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
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 ...

$167.49
American Marine Pinpoint Nitrate Monitor

American Marine Pinpoint Nitrate Monitor

American Marine is proud to introduce the PINPOINT™ Nitrate Monitor. The only truly affordable and accurate digital Nitrate measurement instrument engineered for marine saltwater. The PINPOINT™ Nitrate Monitor has been designed as...

$249.99
HM Digital COM-80 HydroTester EC/TDS Meter

HM Digital COM-80 HydroTester EC/TDS Meter

EC/TDS/Temp Water Resistant Hydrotester The COM-80 is an economically priced, reliable EC/TDS meter that is ideal for testing applications such as hydroponics & gardening, pools & spas, aquariums & reef tanks, water ionizers, d...

$40.99
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
American Marine Pinpoint II Calcium Monitor

American Marine Pinpoint II Calcium Monitor

The PINPOINT II Calcium Monitor™ is the only truly affordable and accurate digital Calcium measurement instrument. Powered by a 9-volt battery (not included) or the Pinpoint AC Adapter Kit (not included). The PINPOINT II Calcium M...

$249.99
Neptune Systems Apex Probe Module 3 (Dissolved Oxygen, Temp) Expansion Box

Neptune Systems Apex Probe Module 3 (Dissolved Oxygen, Temp) Expansion Box

The PM3 probe module, includes support for dissolved oxygen, temperature, and 6 digital inputs. The PM3 features are: Monitor/Control Dissolved and temperature. 6 digital inputs for float switches, water on floor sensors,...

$94.95
American Marine pH/ORP Extension Cable

American Marine pH/ORP Extension Cable

American Marine pH/ORP Extension Cable PINPOINT 15 foot extension cable for the pH or the ORP/REDOX probe. This will add an additional 15 feet onto the 10 feet of the probe cable for a total of 25 feet. This extension cable wil...

$34.99
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...

$160.49
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
Digital Aquatics Expansion Socket for ReefKeeper Controller

Digital Aquatics Expansion Socket for ReefKeeper Controller

Expansion Socket The Digital Aquatics Expansion Socket allows you to control high current devices without affecting your ReefKeeper power budget

$49.99
Hanna Instruments pH Electrode Ultem Body, Dbl Junction, Gel Filled, Teflon Junction, BNC, 1m Cable

Hanna Instruments pH Electrode Ultem Body, Dbl Junction, Gel Filled, Teflon Junction, BNC, 1m Cable

Spare pH electrode, with Teflon ® junction, 2 m (6.6') cable, for general purpose, water treatment and agriculture.

$51.49
American Marine Pinpoint Oxygen Monitor

American Marine Pinpoint Oxygen Monitor

American Marine PINPOINT II Oxygen Monitor PINPOINT II Oxygen Monitor™ will quickly and accurately display a digital readout for dissolved oxygen in either % oxygen or ppm saturation.  The measurement range is 00.0-20.0...

$273.49
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
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...

$92.22
Tunze Water Level Alarm 7607/2

Tunze Water Level Alarm 7607/2

The Tunze Water Level Alarm (7607/2) has three sensors: one run-dry protection sensor and two overflow sensors. Each sensor comes with a holding device which can be stuck with silicone or clamped to horizontal or vertical pan...

$203.99
1 Channel Apex to Stream/1 Channel Light Dimming Cable Neptune Systems AquaController

1 Channel Apex to Stream/1 Channel Light Dimming Cable Neptune Systems AquaController

Combination stream and light dimming cable for Apex variable speed ports.  It has 1 RJ45 connector on one end of the cable which plugs into the Apex base unit.  The other end of the cable contains 1 Din5 connector used t...

$18.99
JBJ TrueTemp Digital Heater Controller

JBJ TrueTemp Digital Heater Controller

JBJ TrueTemp Digital Heater Controller JBJ`s TrueTemp digital heater controller is the most accurate & precise controller available. Plus/Minus 0.5F Accuracy 0-99.9F Temperature Range HIGH & LOW Temperature ...

$107.99
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
Neptune Oxygen Probe with 10 foot Cable

Neptune Oxygen Probe with 10 foot Cable

Oxyguard Dissolved Oxygen Probe 0 to 19.9 ppm Lab quality probe w/ 10ft cable Temperature, Altitude, and Salinity Compensation Mini Din 6 Connector PC Serial Cable In order to connect the AquaController to a PC, ...

$499.95
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
Digital Aquatics RKM-APC Advanced Pump Controller

Digital Aquatics RKM-APC Advanced Pump Controller

Digital Aquatics APC (Advanced Pump Control) Module Create a Safe, Natural Environment Digital Aquatics’ Advanced Pump Controller (APC) module helps you create a safe and natural environment for your fish and coral by givi...

$129.99
51 - 75 of 79
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