Great Aquariums Start Here
1-800-566-3474
Live Chat Support
    Free Shipping On $75+
  • FREE Shipping On $75+
  • 14-Day Low Price Guarantee
  • 14-Day Low Price Guarantee
  • Same Day Shipping
  • Same Day Shipping
FREE Shipping on
Orders Over $75
Standard ground shipping (1-7 business days) starts at a low $4.99 and most orders over $75 ship FREE. Learn More
 
If you find a product we sell for a lower price at another online store, we will match their price—today and up to 14 days after you've purchased the item! Learn More
 
Same Day Shipping
We promise to ship your order as fast as humanly possible. In fact, 99% of orders placed before 6 pm EST ship the same day! Learn More
 
Show: per page
Grid View Grid List View List
Sort by:
1 - 25 of 76
Hanna Instruments Checker Colorimeter Reagents

Hanna Instruments Checker Colorimeter Reagents

Reagent kit for 25 Chlorine tests Range: 0.00 to 2.50 mg/L

From $7.49
Hanna Instruments Checker Colorimeter

Hanna Instruments Checker Colorimeter

The HANNA HI 711 Checker HC bridges the gap between simple chemical test kits and professional instrumentation. Chemical test kits are not very accurate and only give 5 to 10 points resolution while professional instrumentation...

From $49.99
Marina Floating Thermometer w/ Suction Cup

Marina Floating Thermometer w/ Suction Cup

Feature(s): Centigrade and Fahrenheit For fresh and salt water Accurate and easy to read Safety zone indicator for most tropical fish Protects fish from unsafe temperatures

$2.49
Marina Floating Thermometer

Marina Floating Thermometer

Feature(s): Centigrade and Fahrenheit For fresh and salt water Accurate and easy to read Safety zone indicator for most tropical fish Protects fish from unsafe temperatures

$1.99
Coralife Digital Thermometer

Coralife Digital Thermometer

Ideal for aquariums and terrariums. Readings in 0.1 degrees Fahrenheit or Celsius. Temperature range -10 degrees F to 140 degrees F (-23 degrees C to 60 degrees C). Mounting suction cups and battery included. 39 inch long temperat...

$8.49
Neptune Conductivity Calibration

Neptune Conductivity Calibration

Conductivity Calibration Solution – 447.0 mS Use this calibration solution to calibrate your Conductivity Probe and PM2 for RO/DI water quality monitoring.

From $2.95
Marine Depot Aquarium Refractometer

Marine Depot Aquarium Refractometer

The Refractometer is a must have for all aquarium hobbyists. The proper salinity is crucial for the survival and health of your fish and corals . This high quality refractometer is extremely accurate and easy to use and calibr...

$49.99 $39.99
Zoo Med MagClip® Magnetic Suction Cups

Zoo Med MagClip® Magnetic Suction Cups

Zoo Med MagClip Industrial strength MAGNETIC suction cup with interchangeable clips Never replace your suction cups again! Includes 6 assorted sizes of nylon clips to hold all types of aquarium accessories like pH probes, ORP...

$8.99
Lifegard Aquatics Little Time Or Temp

Lifegard Aquatics Little Time Or Temp

Digital clock/thermometer with illuminating light. Accurate measurement of aquarium water or room temperature in F or C. Lifegard Aquatics Little Time & Temp Digital Clock and Temperature Indicator with backlit display and ba...

$21.99
Coralife Deep Six Hydrometer Wide Range Specific Gravity Meter

Coralife Deep Six Hydrometer Wide Range Specific Gravity Meter

The re-designed deep six hydrometer with improved calibration and bubble diffuser ensures more accurate readings of your aquarium salt levels. Also includes a built in base so you can rest the hydrometer on a counter top or other ...

$7.49
American Marine Pinpoint Salinity Calibration Fluid

American Marine Pinpoint Salinity Calibration Fluid

53.0 mS standardized fluid for calibrating the PINPOINT Salinity Monitor™

$9.49
Neptune Systems Magnetic Probe Rack (MPR)

Neptune Systems Magnetic Probe Rack (MPR)

The newly announced MPR - Magnetic Probe Rack is the perfect product for anyone with an existing Apex or those just now picking one up. The MPR has four locations for probes so customers can rig up their pH, ORP, salinity, and tem...

$39.95
American Marine Pinpoint pH Calibration Fluids - 5 Pack

American Marine Pinpoint pH Calibration Fluids - 5 Pack

Quantity: 5-pack American Marine PINPOINT High-Precision pH Calibration Fluids pH 4.000 +/- 0.002 These come in single-use plastic envelope packets, and they are extremely accurate and field portable. Each packet contains enou...

From $4.95
Lifegard Aquatics Big Digital Temperature Alert

Lifegard Aquatics Big Digital Temperature Alert

Large face digital thermometer with alert feature. Display both aquarium water temperature and room temperature in degrees Fahrenheit. Has 4 alert features. Alarm will sound and LED flashes: high temp alert only, low temp alert on...

$34.99
Hanna Instruments Checker pH Pen

Hanna Instruments Checker pH Pen

High accuracy with 0.01 pH resolution Two point fast and accurate calibration Usable with virtually any electrode that shares the same connector 3000 hours of battery life HI 1270 small diameter probe fitseasily into a ...

$39.99
Neptune Systems pH Probe

Neptune Systems pH Probe

Feature(s): Precision of +/- .01 10` coax cable Sealed Ag/AgCI reference. Standard BNC connector

From $44.95
JBJ Digi-Temp Thermometer

JBJ Digi-Temp Thermometer

Digi-Temp Digital Thermometer Checking your tank’s temperature has never been easier! This stylish thermometer offers a constant digital display with +/- 1 Fahrenheit accuracy. They’re also completely wireless and submersible. P...

$10.99
American Marine Pinpoint pH Probe

American Marine Pinpoint pH Probe

PINPOINT ™ pH Replacement Probe is designed especially with your purpose in mind. It features long, continuous duty expectancy, fast response and, most importantly, is non-toxic to your system. Each probe features a 10 foot ca...

$39.49
pH Buffer/Calibration Solution 500 ml

pH Buffer/Calibration Solution 500 ml

Calibration solution for pH monitors or controllers. pH 10.0. 500mL. **Variations of this product can be found in many online stores. The version we carry is of the highest quality. Although this item is eligible for price...

From $11.99
HM Digital Handheld TDS Meter w/ Thermometer

HM Digital Handheld TDS Meter w/ Thermometer

Handheld TDS Meter 0-9990 with ATC & Temp, in vinyl carrying case The world’s most popular TDS meter, the TDS-3 is the most reliable and longest lasting meter of its kind. It has a wide range of 0-9990 ppm has a hold button...

$24.99
Instant Ocean SeaTest Hydrometer

Instant Ocean SeaTest Hydrometer

Instant Ocean Hydrometer`s new improved design delivers precise full-range salinity and specific gravity readings - accurate to 0.001 - every time. Easy-fill convenience keeps hands dry when filling. It has a durable, permanent ne...

$13.49
Neptune Systems Leak Detection Probe - Solid Surface

Neptune Systems Leak Detection Probe - Solid Surface

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 weighted and is perfect for placing on any...

$29.95
Neptune Systems I/O Break Out Box for Apex, Apex Lite, AquaController 3, or AquaController 3 Pro

Neptune Systems I/O Break Out Box for Apex, Apex Lite, AquaController 3, or AquaController 3 Pro

Easily add float switches, water on the floor sensors, etc. to the Apex, Apex Lite, Apex Jr (either PM1 or PM2 module also required) , AquaController 3, or AquaController 3 Pro. Simply plug the Breakout box`s minidin 8 cable into...

$39.95
Neptune Systems Temperature Probe For Apex Controller AquaController Jr, AquaController 3 and PX1000 ONLY

Neptune Systems Temperature Probe For Apex Controller AquaController Jr, AquaController 3 and PX1000 ONLY

Temperature probe for Neptune Systems: Apex Controller, AquaController Jr, AquaController 3 and PX1000 ONLY.

$29.95
Digital Aquatics pH Probe w/ Calibration Packets

Digital Aquatics pH Probe w/ Calibration Packets

Digital Aquatics pH Probe w/Calibration Packets Resolution 0.01 pH Cable Length 4 feet Connection Type Male BNC Included Calibration Packets 1 x 7pH calibration packet 1 x 10pH calibration packet Manufacture...

$39.99
1 - 25 of 76
Add to Cart or Notify Me
This item is temporarily unavailable but will be back in stock soon.


Item #
Price:
Click the Add To Cart button below if you'd like to reserve this item today. Any other items included in your order will be immediately processed and shipped. We will ship this item separately as soon as it arrives. We will not charge you for this item until it ships and you will incur no additional shipping charges.
Enter your email address in the field below and click the Notify Me button if you'd like us to send you an email when this item becomes available. Although you will be immediately notified when we have stock on hand, we will not reserve any units for you; you must return to our website and place an order.

Notify Me
Just enter your email address below and we'll let you know when the product you are looking for becomes available!


Item Code:
Price:
Your Email:
WIN 3x CONTROLLABLE PUMPS! Sign up for our best deals, video tutorials + a chance to win $415 worth of Aqua Medic gear!