Skip to content

Free Shipping In Canada +$119.00

Collection: Controllers & Testing

Testing and monitoring gear for freshwater and reef tanks: reagent kits, digital checkers, meters, probes, and automated controllers. Manual kits confirm a number; controllers watch it around the clock.

Compare (0/5)

265 products

Hanna Calcium Checker Reagents - 25 Pack

Test Kit

Hanna Calcium Checker Reagents - 25 Pack

Regular price $45.95
Sale price $45.95 Regular price
Seneye Slide Pack (3 Piece)

Aquarium Monitor

Seneye Slide Pack (3 Piece)

Regular price $60.20
Sale price $60.20 Regular price
API Nitrite Test Kit

Test Kit

API Nitrite Test Kit

Regular price $14.75
Sale price $14.75 Regular price
Reef Crest Salinity Refractometer
new

Salinity Tester

Reef Crest Salinity Refractometer

Regular price $78.85
Sale price $78.85 Regular price
Hanna Alkalinity Checker Freshwater Reagents - 25 Pack

Test Kit

Hanna Alkalinity Checker Freshwater Reagents - 25 Pack

Regular price $17.95
Sale price $17.95 Regular price
Hanna Phosphate Checker

Test Kit

Hanna Phosphate Checker - Low Range

3.7 out of 5 stars, 3 reviews
Regular price $77.95
Sale price $77.95 Regular price
Neptune Trident Reagents  economy pack on sale

Aquarium Monitor

ABC Reagents for Auto Testers - 6 Month Supply

5.0 out of 5 stars, 1 review
Regular price $114.95
Sale price $114.95 Regular price
Hanna Magnesium Checker Reagent

Test Kit

Hanna Magnesium Checker Reagent

Regular price $26.95
Sale price $26.95 Regular price
Hanna Marine pH Checker Reagent

Test Kit

Hanna Marine pH Checker Reagent

Regular price $26.95
Sale price $26.95 Regular price
Hanna Low Range Nitrate Checker Reagents

Test Kit

Hanna Low Range Nitrate Checker Reagents - 25 Pack

Regular price $26.95
Sale price $26.95 Regular price
Hanna Low Range Nitrate Checker

Test Kit

Hanna Low Range Nitrate Checker

5.0 out of 5 stars, 1 review
Regular price $77.95
Sale price $77.95 Regular price
Salifert Freshwater Test Kit - KH

Test Kit

Salifert Freshwater Test Kit - KH

5.0 out of 5 stars, 1 review
Regular price $9.45
Sale price $9.45 Regular price
Neptune Flow Sensor - 1 Inch

Aquarium Monitor

Neptune Flow Sensor - 1 Inch

Regular price $129.99
Sale price $129.99 Regular price
Neptune Apex EnergyBar 832

Aquarium Monitor

Neptune Apex EnergyBar 832

Regular price $469.99
Sale price $469.99 Regular price
Salifert Silicate Test Kit

Test Kit

Salifert Silicate Test Kit

Regular price $20.95
Sale price $20.95 Regular price
Pinpoint pH Calibration Solution 4.0

Aquarium Monitor

Pinpoint pH Calibration Solution 4.0

5.0 out of 5 stars, 2 reviews
Regular price $1.80
Sale price $1.80 Regular price
Pinpoint ORP Monitor

Aquarium Monitor

Pinpoint ORP Monitor

Regular price $187.35
Sale price $187.35 Regular price
Tropic Marin High-Precision Hydrometer
new

Salinity Tester

Tropic Marin High-Precision Hydrometer

5.0 out of 5 stars, 1 review
Regular price $51.00
Sale price $51.00 Regular price
Hygger Hydrometer

Salinity Tester

Hygger Hydrometer

Regular price $4.93
Sale price $4.93 Regular price $12.30
Neptune Trident NP Testing System with 2 month Reagent Kit

Aquarium Monitor

Neptune Trident NP Testing System with 2 month Reagent Kit

Regular price $999.99
Sale price $999.99 Regular price

You Can't Correct What You Haven't Measured

Stable water chemistry is the difference between a thriving tank and a stalled one. Testing tells you where you stand; monitors and controllers keep watch when you're not looking.

Levels of Testing and Control

  • Manual test kits — titration-based kits for periodic checks of the core parameters.
  • Digital checkers — handheld colorimeters that remove the guesswork of reading color charts.
  • Continuous monitors — pH, salinity, and temperature meters with calibration solutions.
  • Automation — controllers that log data and switch equipment on set conditions.

A simple community setup needs little more than a master kit. A demanding reef under active dosing earns its keep from digital checkers and a controller that reacts to a failure faster than you can. Choose the level that matches how much risk your livestock represents. Not sure which tier fits your tank? Email info@jlaquatics.com.

J&L Aquatics was formed in December 1997

Our business was started from our love of the aquarium hobby. We at J&L Aquatics felt that the Canadian aquarist should have the option to purchase top quality supplies, equipment and livestock other than the generally over priced local retail stores.