Home
Specials
Livestock
New Items
Education
Forums
Help & Info
New Customer?
Register
|
Sign In
Narrow Your Search
Saltwater Aquarium Supplies
Calibration Solution (36)
Monitor Equipment (81)
Optical (9)
Replacement Probes (27)
Temperature Contr... (9)
Thermometers (11)
Shop By Brand
American Marine (23)
Aqua Logic (6)
Aqua Medic (5)
Aquadyne (29)
ASI or Aquarium Sy... (1)
Captive Purity (8)
Coralife (2)
Digital Aquatics (4)
Elos USA (16)
Hagen (6)
Hanna Instruments (17)
JBJ Lighting (1)
Lowell Direct (1)
Marine Depot (1)
Neptune Systems (29)
Oscar (1)
Pentair, Rainbow L... (2)
Red Sea (1)
Reef Fanatics (1)
Tunze (9)
X-10 USA (9)
Zoo Med (1)
Browse by Price
$15 or less
$15-$25
$25-$55
$55-$125
$125-$205
$205 and more
Top sellers
American Marine Pinpoint ...
American Marine Pinpoint ...
American Marine Pinpoint ...
American Marine Pinpoint ...
American Marine Pinpoint ...
Neptune Systems Standard ...
Aquarium Supplies
Additives
Air Pumps
Aquariums
Books & Cd's
Calcium Reactors
CO2 Regulator Kits
Chillers
Controllers
Dosing Pumps/Top-Off
Filters
Filter Media
Food
Freshwater Products
Heaters
Hydrometer
Lighting
Maintenance
Medications
Miscellaneous
Overflow Boxes
Ozonizers
Plumbing Parts
Powerheads
Protein Skimmers
Pumps (External)
Reverse Osmosis
Salt Mix
Substrate
Test Kits
Thermometers
UV Sterilizers
Wavemakers
Wet/Dry Filters
Shop By Brand
Pond Supplies
Reef Tank Packages
Betta Store
Coral Propagation
Clearance
Gift Certificates
Home
»
Saltwater Aquarium Supplies
»
Testing Equipment
»
173 items found
Search my results:
Sort By:
Best Match
Lowest Price
Highest Price
Lowest Rated
Highest Rated
Title (A to Z)
Title (Z to A)
Display items:
15
30
60
|<<
Previous
8
9
10
11
12
Next
>>|
Rainbow Lifegard Little Time Or Temp
Digital clock/thermometer with illuminating light. Accurate measurement of aquarium water or room temperature in F or C. Rainbow Lifegard/Pentair Aquatics Little Time & Temp Digital Clock and Temperature Indicator with backli...
Avg. Customer Review (10) reviews
Thermometers: See all items
Our Price:
$19.99
Item Code: RB1311
Red Sea Hydrometer with Digital Thermometer
Unique intergrated hydrometer and thermometer. Provides accurate measurement of specific gravity (degree of salinity) in a saltwater aquarium. Patented design enables device to be permanently installed inside aquarium, allowing ti...
Avg. Customer Review (4) reviews
Optical: See all items
Our Price:
$12.99
Item Code: RS3211
Reef Fanatic pH Monitor
Our pH monitor offers continuous and accurate pH reading. It also offers sounding alarm when pH reading is out of the user preset range. The alarm feature can be set for either high or low position. Includes pH probe and one set o...
Avg. Customer Review (1) reviews
Monitor Equipment: See all items
Our Price:
$99.99
Item Code: RC1713
Serial Interface Cable For PC (for Neptune AquaController )
In order to connect the AquaController to a PC, a serial connection is required. This serial cable is 6 foot long with a minidin 8 connector (plugs into the AquaController) on one end and a female DB9 connector on the other. If a ...
Avg. Customer Review (4) reviews
Monitor Equipment: See all items
Our Price:
$17.99
Item Code: NS7111
Tom Aquatics Aquarium Temp Alert Fahrenheit
Accurate Measurement of Water Temperature with Low/High Temperature Alert Preprogrammed for Tropical Fish & Clock for your convenience. Digital Thermometer with probe 3ft (with all plastic probe & suction cup cord...
Avg. Customer Review (5) reviews
Thermometers: See all items
Our Price:
$21.49
Item Code: OE1208
Tunze Calibration Liquid 50 ms/cm 7030.14
Tunze Conductivity Calibration Solution - 7030.14 For saltwater use 50ms/cm
Be 1st to review
Calibration Solution: See all items
Our Price:
$7.54
Item Code: TZ7351
Tunze Calibration Liquid 600 ms/cm 7005.14
Tunze Conductivity Calibration Solution - 7005.14 For freshwater or brackish water use 600µS/cm
Be 1st to review
Calibration Solution: See all items
Our Price: