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Collection: Controllers & Testing

Test kits, checkers, monitors, and controllers for freshwater and reef aquariums — from single-parameter reagent kits to full tank automation. A reagent kit answers one question once; a controller keeps answering it.

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264 products

Hydros Automatic Fish Feeder
new

Hydros Automatic Fish Feeder

Regular price $58.20 CAD
$58.20 CAD
Hanna Low Range Nitrate Checker Reagents

Hanna Low Range Nitrate Checker Reagents - 25 Pack

Regular price $26.95 CAD
$26.95 CAD
MarinLab ICP-OES Aquarium Water Test

MarinLab ICP-OES Aquarium Water Test

Regular price $59.95 CAD
$59.95 CAD
Neptune Conductivity Probe

Neptune Conductivity Probe

Regular price $384.99 CAD
$384.99 CAD
Hydros System Command Bus Cable - 6 Foot

Hydros System Command Bus Cable - 6 Foot

Regular price $21.35 CAD
$21.35 CAD
Salifert Freshwater Test Kit - KH

Salifert Freshwater Test Kit - KH

5.0 out of 5 stars, 1 review
Regular price $9.45 CAD
$9.45 CAD
Hydros Water Level Sensor

Hydros Water Level Sensor

Regular price $68.85 CAD
$68.85 CAD
Pinpoint ORP Storage Solution

Pinpoint ORP Storage Solution

Regular price $13.65 CAD
$13.65 CAD
Neptune Apex Pro aquarium controller package overview image.

Neptune Apex A3 Pro Aquarium Controller

Regular price $1,429.99 CAD
$1,429.99 CAD
Neptune Apex Display Module

Neptune Apex Display Module

Regular price $229.99 CAD
$229.99 CAD
Hanna HI-70300L Electrode Storage Solution - 500 mL

Hanna pH Electrode Storage Solution HI-70300L - 500ml

Regular price $31.95 CAD
$31.95 CAD
Hydros Dosing Pump

Hydros Dosing Pump

Regular price $103.30 CAD
$103.30 CAD
Hydros Triple Optical ATO Kit

Hydros Triple Optical ATO Kit

Regular price $137.75 CAD
$137.75 CAD
Hanna Free Chlorine Checker - HI701
new

Hanna Free Chlorine Checker - HI701

Regular price $77.95 CAD
$77.95 CAD
hanna ammonia checker reagents for marine reef aquariums.

Hanna Ammonia Checker Reagent - Marine

Regular price $32.95 CAD
$32.95 CAD
Pinpoint Calibration Thermometer

Pinpoint Calibration Thermometer

5.0 out of 5 stars, 2 reviews
Regular price $14.40 CAD
$14.40 CAD
Salifert Freshwater Test Kit - Phosphate

Salifert Freshwater Test Kit - Phosphate

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

Salifert Freshwater Test Kit - pH

5.0 out of 5 stars, 1 review
Regular price $9.45 CAD
$9.45 CAD
Neptune Apex Probe Module 1

Neptune Apex Probe Module 1

Regular price $184.99 CAD
$184.99 CAD
Neptune IO Breakout Box

Neptune IO Breakout Box

4.5 out of 5 stars, 2 reviews
Regular price $89.99 CAD
$89.99 CAD

From a Test Kit to a Full Controller

Keeping stable water starts with knowing your numbers. Where you land on that spectrum depends on how demanding your livestock is and how much you want automated. We carry testing and control gear from Hanna, Salifert, API, Neptune, Pinpoint, Milwaukee, and Red Sea.

Match the Tool to the Tank

  • Reagent test kits — Salifert and API titration kits for periodic manual checks.
  • Digital checkers — Hanna colorimeters for repeatable calcium, alkalinity, phosphate, and nitrate readings.
  • Meters & probes — pH, salinity, and temperature monitors with calibration solutions.
  • Controllers — Neptune Apex systems that log parameters and switch equipment automatically.

A freshwater community tank runs fine on a master kit and a thermometer. A mixed reef under heavy dosing benefits from checkers and a controller that can catch a heater or return-pump failure before it costs livestock. Not sure where you sit? Email sales@jlaquatics.com. J&L has outfitted Canadian aquarists since 1997.

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.