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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.

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19 of 265 products

Salifert Alkalinity Test Kit

Test Kit

Salifert Alkalinity Test Kit

5.0 out of 5 stars, 1 review
Regular price $20.95
Sale price $20.95 Regular price
Salifert Magnesium Test Kit

Test Kit

Salifert Magnesium Test Kit

5.0 out of 5 stars, 2 reviews
Regular price $24.95
Sale price $24.95 Regular price
Salifert Calcium Test Kit

Test Kit

Salifert Calcium Test Kit

5.0 out of 5 stars, 4 reviews
Regular price $23.95
Sale price $23.95 Regular price
Salifert Nitrate Test Kit

Test Kit

Salifert Nitrate Test Kit

4.7 out of 5 stars, 3 reviews
Regular price $21.95
Sale price $21.95 Regular price
Salifert Phosphate Test Kit

Test Kit

Salifert Phosphate Test Kit

Regular price $24.95
Sale price $24.95 Regular price
Salifert Ammonia Test Kit

Test Kit

Salifert Ammonia Test Kit

Regular price $17.95
Sale price $17.95 Regular price
Salifert Freshwater Test Kit - GH

Test Kit

Salifert Freshwater Test Kit - GH

5.0 out of 5 stars, 1 review
Regular price $9.45
Sale price $9.45 Regular price
Salifert Nitrite Test Kit

Test Kit

Salifert Nitrite Test Kit

Regular price $14.95
Sale price $14.95 Regular price
Salifert pH Test Kit

Test Kit

Salifert pH Test Kit

Regular price $13.95
Sale price $13.95 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
Salifert Silicate Test Kit

Test Kit

Salifert Silicate Test Kit

Regular price $20.95
Sale price $20.95 Regular price
Salifert Freshwater Test Kit - Nitrate

Test Kit

Salifert Freshwater Test Kit - Nitrate

5.0 out of 5 stars, 1 review
Regular price $15.95
Sale price $15.95 Regular price
Salifert Freshwater Test Kit - Phosphate

Test Kit

Salifert Freshwater Test Kit - Phosphate

5.0 out of 5 stars, 1 review
Regular price $14.95
Sale price $14.95 Regular price
Salifert Freshwater Test Kit - Nitrite

Test Kit

Salifert Freshwater Test Kit - Nitrite

5.0 out of 5 stars, 1 review
Regular price $10.95
Sale price $10.95 Regular price
Salifert Potassium Test Kit

Test Kit

Salifert Potassium Test Kit

4.0 out of 5 stars, 1 review
Regular price $23.95
Sale price $23.95 Regular price
Salifert Freshwater Test Kit - Ammonia

Test Kit

Salifert Freshwater Test Kit - Ammonia

Regular price $13.45
Sale price $13.45 Regular price
Salifert Freshwater Test Kit - pH

Test Kit

Salifert Freshwater Test Kit - pH

5.0 out of 5 stars, 1 review
Regular price $9.45
Sale price $9.45 Regular price
Salifert Copper Test Kit

Test Kit

Salifert Copper Test Kit

Regular price $21.95
Sale price $21.95 Regular price
Salifert Iodide Test Kit

Test Kit

Salifert Iodide Test Kit

Regular price $37.95
Sale price $37.95 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.