Digital

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    The new Milwaukee MA887 Seawater Digital Refractometer encompasses 3 different types of user selected scales for the measurement of seawater providing for a much more precise evaluation. Each scale is temperature compensated. Milwaukee Digital Seawater Refractometer Manual

    $119.99

    Maintain the proper temperature for your tank inhabitants with JBJ TRUE TEMP Digital Heater Controller. Settings accurate to +/- 0.5° F Calibration setting Smart memory chip LED heating indicator Large LED display of the current temperature. Heater sold separately

    $89.99

    Maintain temperature control to provide a safe and stable environment for your tank inhabitants with the Finnex HMO Titatium Digital Control Heater. Digital accuracy within to +/-2°F keeps water temperatures at a constant level. HMO-50: 50W – 10-20 Gallon tank HMO-100: 100W – 20-30 Gallon tank…

    Starting at:
    $34.99

    Titan Controls Apollo 9 timer features the ability to switch power on and off up to six times per 24 hour day. Individual day or multi-day timer settings. Battery backup (included) for the timer clock assures your systems stay on schedule even after a power outage. Minimum 'on' time is 1 minute. 3…

    $19.99

    The perfect ballast for Reef Brite Metal Halide Pendants and many others. Compatible with all 150w and 175w metal halide lamps. Digital Lightweight Connects directly to Reef Brite Reflectors

    $138.32

    The perfect ballast for Reef Brite Metal Halide Pendants and many others. Compatible with all 250W metal halide lamps. Digital Dimmable 1-10V Lightweight Connects directly to Reef Brite Reflectors

    $155.61

    The perfect ballast for Reef Brite Metal Halide Pendants and many others. Compatible with all 400W metal halide lamps. Digital Dimmable 1-10V Lightweight Connects directly to Reef Brite Reflectors

    $173.81

    Heaters are by far one of the most important pieces of equipment on any reef tank. Finnex has been making high quality, compact electric, titanium heaters for years and allow you to create a safe and very stable temperature within the tank. The titanium body of the HMX-S heater is virtually…

    Starting at:
    $30.59

    Heavy Duty Programmable Digital 7 Day Timer By connecting your electrical appliance to the Save A Watt Digital Timer will let you take control of your power usage. Have lights, pumps, fans, and much more controlled by this heavy duty programmable timer. The large backlit LCD display makes…

    $34.95

    A large display digital thermometer with Alert feature. Displays both aquarium water temperature and room temperature. Available in °F or °C models. Has four Alert features. (Alarm will sound and LED flashes) High Temp Alert Only (Probe) Both High & Low Temp Alert Only (Air/Room) Low Temp Alert Only…

    $39.49

    …things. Never forget to turn your return pump back on after a water change or feed that frozen fish food you have had thawing. Three 100-hour digital timers Distinctive alarms for each timer Easy to ready LCD screen Soft, comfortable buttons Sits on counter with angled face for easy view Non-slip…

    $19.99

    Easily calibrate your heater with the Digital Instant Read Themometer from OXO Good Grips. Large, easy to read numbers Fahrenheit and Celsius readings Temperature range from -40° to 302° F (-40° to 150° C) Accuracy range of +/- 2° F LR44 Battery included Hand wash only

    $19.99

    JBJ TRUE TEMP Titatium Heating System includes: Digital Heater Controller - accurate and precise to +/- 0.5° F Titatium Heater with Safety Guard Remote Temperature Probe - remote quick disconnect temperature probe can be placed up to 5 Ft away from the heating element for a comprehensive temperature…

    Starting at:
    $99.99

    …Grade Water Testing Measure the electrical conductivity, total dissolved solids, and temperature with the HM Digital COM-100 Waterproof Meter. Automatic Temperature Compensation (ATC) IP-67 Waterproof Housing Large LCD Screen Auto-Off  Low-Battery Indicator Digital Calibration Factory Calibration

    $76.95

    The TDS-3 Handheld TDS Meter from HM Digital is a useful tool to spot check the TDS of your home water supply or RO/DI unit output. This unit features a digital display, built in thermometer, and comes with a carrying case. As with all HM-Digital products, the TDS-3 comes factory calibrated.

    $24.99

    …Single Inline TDS Meter from HM Digital measures the TDS of a single water line. This is a great tool to monitor the TDS of your reverse osmosis system. Common monitoring locations include pre-system, post membrane or post DI stage. This unit features a digital display and comes with a 1/4" John…

    $24.99

    NaCl calibration solution, available in 342 ppm. Comes in lightweight HDPE plastic bottles. Sealed with a coated foam liner.

    $7.99

    100 MG/HR Ozone unit with ORP Controller and Air Dryer – easy to use and budget-friendly. Easy to read back-lit digital display. Utilizes the digital continuous sampling and control technology to control the ORP value more exactly and reliably. Designed for use in a humid environment. No regular…

    $189.99

    200 MG/HR Ozone unit with ORP Controller and Air Dryer – easy to use and budget-friendly. Easy to read back-lit digital display. Utilizes the digital continuous sampling and control technology to control the ORP value more exactly and reliably. Designed for use in a humid environment. No regular…

    $219.99

    …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 Waterproof Cables Secure Mounting Bracket Perfect for residential, designed for commercial/industrial

    $59.95

    Use the Kessil A360 ReefKeeper Control Cable to connect your Kessil 360 (A360N/360W) LED lights to your Digital Aquatics ReefKeeper controller. Type 2 - compatible with Digital Aquatics controllers Length: 6 Ft. (1800mm) without connectors Color: Black One End: 1/8" (3.5mm) stereo male phono plug…

    $19.99

    The DM-2 Commercial Dual Inline TDS Meter from HM Digital has a stronger water resistant casing than the DM-1. This tool monitors the TDS of your reverse osmosis system in two places and lets you know exactly how the system is performing. BulkReefSupply.com suggests installing the dual TDS meter…

    $45.99

    Ideal for all pH testing, water purification applications, wastewater regulation, aquaculture, hydroponics, colloidal silver, labs & scientific testing, pools & spas, ecology testing, boilers & cooling towers, water treatment, wine, coffee, agriculture and more.

    $79.99

    …water quality and then how your DI is performing by removing all remaining TDS from the final product water. The DM-1 Dual Inline TDS Meter from HM Digital is one of the most important reverse osmosis accessories. This tool monitors the TDS of your reverse osmosis system in two places and lets you…

    $29.99

    …DI stage. These three readings will notify you when it's time to change the RO membrane and DI resin. The TRM-1 Triple Inline TDS Meter from HM Digital is one of the most essential reverse osmosis accessories. This tool uses electrode probes to monitor the TDS of your reverse osmosis system in three…

    $44.99

    …This is a great unit for maintaining your RO Unit. Specifications: Five independent timers Monitors up to 5 stages Timer counts down in month or days Volumizer counts up in gallons or liters Digital display LED light indicator and audible alarm (beep) Easy installation See below for full details

    $39.99

    Insurance against leaks and drips from RODI system, and many other household applications! The Latching solenoid automatically shuts off the flow of water and also makes a loud beeping noise when the sensor detects moisture 3/8" FNPT (ID) Threads or 1/2" BSP Threads (OD) Can be adapted to…

    $53.00

    …readings is even more important.  For not much money at all, refractometer calibration solution doesn’t take any time to use, and works with all digital and sight type refractometers to calibrate or double check readings at 35ppt (1.026sg). Aqua Craft Salinity Calibration Fluid calibrates to sg…

    $6.99

    …awesome little tool that will give you accurate easy to read results.  If you have bad eyes or have a hard time with color change test kits, the digital read out on the Hanna checkers is super easy to read.  The biggest key with Hanna checkers is keeping the vials nice and clean for consistent…

    $49.95