Aquarium supplies for your fish tanks, reef tanks and water gardens.Home
Specials & Clearance Aquarium Products: Sign up for our newsletter for special articles, promotions and coupon codes.Specials
New Aquarium ProductsNew Items
Aquarium Fish & Reef Education CenterEducation
Aquarium Fish & Reef ForumsForums
Help and InformationHelp & Info
Pet supplies, Pet products, and Pet Accessories for your dogs, cats, birds, fish, reptiles or small pets. Pet experts are available to help you.
New Customer? Register | Sign In
New BillMeLater customers: Get $10 Off $50
Deal of the Day!
Time Left
00:00:00
Only: $249.99
Narrow Your Search
Saltwater Aquarium Supplies
Monitors & Controllers
Replacement Probes
 
Shop By Brand
Aquadyne
AquaticLife
Digital Aquatics
Elos USA
Hanna Instruments
Neptune Systems
Pinpoint Monitors
Tunze
 
Browse by Price
$265 or less $265-$505 $505 and more
 

Top sellers
Digital Aquatics ReefKeep... Neptune Systems AquaContr... Elos Biotopus II Kit Cont... Elos Multiplug without Le... American Marine Pinpoint ...
 
 
Aquarium Supplies  
Additives
Air Pumps
Aquariums
Books & Cd's
Calcium Reactors
CO2 Regulator
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 Fish Supplies

Coral Propagation

Clearance

Catalog Quick Order

Gift Certificates

Marine Depot Videos

Home

» Saltwater Aquarium Supplies » Testing Equipment

» 24 items found
Selected Filters:
Price: $205-$2605
  Search my results:  Sort By: Display items:
Search Suggestions: temperature controller | reefkeeper | pinpoint | elos | NEPTUNE | nitrate | AquaController | flow meter | controller | test
|<< Previous 1 2 Next >>|
Digital Aquatics ReefKeeper Lite Controller

Digital Aquatics ReefKeeper Lite Controller

ReefKeeper Lite Level 1 ReefKeeper Lite Preliminary Product Information Expandable - up to 4 modules (PC4s, SL1s or MLC) pH, ORP, and switch inputs (w/ optional SL1) 16 timers / 16 alarms Audible / Visual alarms ...

Avg. Customer Review (17) reviews

Monitors & Controllers: See all items

Related Searches: reefkeeper | reefkeeper lite | reef keeper lite | lite
Price Range:
$99.99 to $278.99
Neptune Systems AquaController Jr with Serial Port + Temperature Probe + DC8

Neptune Systems AquaController Jr with Serial Port + Temperature Probe + DC8

The AquaController Jr - Backlight unit delivers the highest price performance ratio in the industry and brings truely affordable aquarium monitoring and control to tanks of all sizes. The AquaController Jr has the same great progr...

Avg. Customer Review (17) reviews

Monitors & Controllers: See all items

Related Searches: dc8 | aquacontroller | aquacontroller jr | neptune
Our Price: $224.99
Item Code: NS1165
Digital Aquatics ReefKeeper Elite Controller

Digital Aquatics ReefKeeper Elite Controller

Digital Aquatics ReefKeeper Systems With systems starting under $150 ReefKeeper control systems can handle tanks from 10-10000 gallons! Flexibility, expandability, style and function make Digital Aquatics controller a great add...

Avg. Customer Review (18) reviews

Monitors & Controllers: See all items

Related Searches: reefkeeper | reefkeeper elite | reef keeper elite | elite air pumps
Our Price: $399.99
Item Code: DA1115
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...

Avg. Customer Review (6) reviews

Monitors & Controllers: See all items

Related Searches: pinpoint | calcium monitor | calcium | calcium test
Our Price: $262.99
Item Code: AM1121
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...

Avg. Customer Review (4) reviews

Monitors & Controllers: See all items

Related Searches: nitrate | nitrate monitor | pinpoint | pinpoint nitrate
Our Price: $252.99
Item Code: AM1123
Neptune Systems AquaController Apex Base Unit w/ Standard Grade pH Probe

Neptune Systems AquaController Apex Base Unit w/ Standard Grade pH Probe

Neptune Systems AquaController Apex System w/ pH Probe Introducing the AquaController Apex. The professional equipment your reef deserves is now within reach. System Includes: 1 - Apex Base Unit 1 - Apex Display 1 - Ener...

Avg. Customer Review (5) reviews

Monitors & Controllers: See all items

Related Searches: apex | apex aquacontroller | neptune apex | aquacontroller
Our Price: $499.99
Item Code: NS11411
Digital Aquatics ReefKeeper Elite Controller RKE Complete System w/ Net

Digital Aquatics ReefKeeper Elite Controller RKE Complete System w/ Net

Digital Aquatics Rk Elite (Complete System W/Net) The ReefKeeper Elite is true to its name, standing alone in the industry as the most innovative aquarium controller on the market. With the most intuitive interface and easy to ...

Avg. Customer Review (3) reviews

Monitors & Controllers: See all items

Related Searches: reefkeeper elite | rke | reefkeeper | reef keeper elite
Our Price: $499.99
Item Code: DA1117
Hanna Instruments Phosphate Kit with Rugged Carrying Case

Hanna Instruments Phosphate Kit with Rugged Carrying Case

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,...

Avg. Customer Review (2) reviews

Monitors & Controllers: See all items

Related Searches: hanna | hanna phosphate | phosphate reactors | phosphate test kit
Our Price: $255.99
Item Code: HN1193
Neptune Systems AquaController 3 Pro (no probe)

Neptune Systems AquaController 3 Pro (no probe)

The AquaController III Pro base unit contains all the necessary capabilities to monitor and control even the most demanding aquarium setup. All of the features described below are present in the base unit; there are no additional ...

Avg. Customer Review (3) reviews

Monitors & Controllers: See all items

Related Searches: neptune | aqua controller | aquacontroller | ns
Our Price: $499.99
Item Code: NS1171
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...

Avg. Customer Review (1) reviews

Monitors & Controllers: See all items

Related Searches: oxygen | pinpoint | test | oxygen probe
Our Price: $249.99
Item Code: AM1119
Tunze CO2 Controller 7074

Tunze CO2 Controller 7074

The Tunze CO2 Controller Set (7074/2) consists of pH Controller 7070/2, CO2 valve kit 7074.11 (including power supply unit 5012.01). The pH controller precisely monitors the pH of the aquarium and opens or closes t...

Avg. Customer Review (1) reviews

Monitors & Controllers: See all items

Related Searches: tunze | co2 | controller | 7074
Our Price: $439.09
Item Code: TZ7111
Octopus Lab Grade ORP Probe

Octopus Lab Grade ORP Probe

Laboratory Grade ORP Probe with 10-ft Cable Combination ORP Probe with 10-ft. cable and BNC connector. Rugged ½-in. epoxy body features a recessed bulb design, which protects the sensitive platinum electrode from damage. Manufact...

Be 1st to review

Replacement Probes: See all items

Related Searches: orp probe orp | orp probe | test | orp
Our Price: $219.99
Item Code: OP3123
AquaticLife pH Controller/ pH Monitor

AquaticLife pH Controller/ pH Monitor

AquaticLife Controller pH/pH Monitor A pH controller and pH monitor incorporated into a single housing. The dual display shows both pH levels measured by the probes. The pH controller display is shown in blue and the pH moniter...

Be 1st to review

Monitors & Controllers: See all items

Related Searches: ph | ph controller | ph monitor | ph meter
Our Price: $239.99
Item Code: AK01002
AquaticLife ORP Controller/ pH Monitor

AquaticLife ORP Controller/ pH Monitor

AquaticLife Controller ORP/Monitor pH A pH controller and ORP monitor incorporated into a single housing. The dual display shows both pH and ORP levels measured by the probes. The pH controller display is shown in blue and the ...

Be 1st to review

Monitors & Controllers: See all items

Related Searches: ph monitor | ph | ph controller | nitrate monitor
Our Price: $259.99
Item Code: AK01001
Tunze Conductivity Meter Max 200 ms 7032m

Tunze Conductivity Meter Max 200 ms 7032m

TUNZE CONDUCTIVITY METER 7032/2 The Tunze Condictivity Meter will accurately monitor the salinity of the water (translated from conductivity). It can be used for freshwater, brackish water or saltwater. The unit&nb...

Be 1st to review

Monitors & Controllers: See all items

Related Searches: flow meter | tunze | conductivity | tds meter
Our Price: $311.72
Item Code: TZ7171
|<< Previous 1 2 Next >>|
Shopping Cart
Cart:
Subtotal:
Shipping:
Total:
0 items
$0.00
$0.00 $0.00
Cart:
Subtotal:
Shipping:
Total:
View Cart
Checkout
Bill Me Later We proudly accept all of these forms of payment
Free Shipping! On orders over $175.00 BBB OnLine Reliability Program BizRate Circle of Excellence - Platinum Winner
Email Specials
Subscribe to our newsletter feed.
Newsletter Tips & Tricks! New Products!
Discounts & Promos!
Subscribe
Testimonials
October 30, 2009
"Fast shipping, great prices and selection."
Bizrate Online Shopper

October 29, 2009
"Great experience. See you next time!"
Bizrate Online Shopper

October 28, 2009
"I would recommend Marine Depot to anyone looking for reasonable pricing."
Bizrate Online Shopper

Marine Depot Reef Squad
T5 Fixtures & Bulbs