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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

Salifert Freshwater Test Kit - Ammonia

Salifert Freshwater Test Kit - Ammonia

Regular price $13.45 CAD
$13.45 CAD
Hanna Ammonia Checker - Freshwater

Hanna Ammonia Checker - Freshwater

Regular price $77.95 CAD
$77.95 CAD
Zoo Med AquaSun Aquarium Timer

Zoo Med AquaSun Aquarium Timer

Regular price $20.95 CAD
$20.95 CAD
Hydros Wave Ice Cap Gyre Engine Pump Adapter

Hydros Wave Ice Cap Gyre Engine Pump Adapter

5.0 out of 5 stars, 1 review
Regular price $20.50 CAD
$20.50 CAD
Hydros Rope Leak Sensor Kit

Hydros Rope Leak Sensor Kit

Regular price $68.85 CAD
$68.85 CAD
Hanna Replacement Test Reagent Vial

Hanna Replacement Test Reagent Vial

4.0 out of 5 stars, 1 review
Regular price $12.95 CAD
$12.95 CAD
Red Sea Magnesium Pro Test Kit

Red Sea Magnesium Pro Test Kit

4.0 out of 5 stars, 1 review
Regular price $65.99 CAD
$65.99 CAD
Hanna Freshwater Alkalinity Checker

Hanna Freshwater Alkalinity Checker

Regular price $77.95 CAD
$77.95 CAD
Aqueon 7-in-1 Aquarium Test Strips - 50 Pack

Aqueon 7-in-1 Aquarium Test Strips - 50 Pack

Regular price $19.55 CAD
$19.55 CAD
Neptune Apex aquarium controller package overview image.

Neptune Apex A3 Aquarium Controller

5.0 out of 5 stars, 1 review
Regular price $969.99 CAD
$969.99 CAD
Hygger Hydrometer

Hygger Hydrometer

$4.93 CAD
Sale price $4.93 CAD Regular price $12.20 CAD
Neptune Apex MXM Control Module

Neptune Apex MXM Control Module

Regular price $199.99 CAD
$199.99 CAD
AutoAqua Smart Stir

AutoAqua Smart Stir

Regular price $53.65 CAD
$53.65 CAD
Hanna Marine pH Checker Reagent

Hanna Marine pH Checker Reagent

Regular price $26.95 CAD
$26.95 CAD
Hydros System Command Bus Cable - 1 Foot

Hydros System Command Bus Cable - 1 Foot

Regular price $13.45 CAD
$13.45 CAD
Salifert Freshwater Test Kit - Nitrite

Salifert Freshwater Test Kit - Nitrite

5.0 out of 5 stars, 1 review
Regular price $10.95 CAD
$10.95 CAD
Zoo Med AquaSun Aquarium Controller

Zoo Med AquaSun Aquarium Controller

Regular price $39.80 CAD
$39.80 CAD
Pinpoint AC Adapter

Pinpoint AC Adapter

Regular price $16.05 CAD
$16.05 CAD
Neptune AquaBus Cable - 15 Foot Male/Male

Neptune AquaBus Cable - 15 Foot Male/Male

Regular price $64.99 CAD
$64.99 CAD
Two Little Fishies AccuraSea Seawater Calibration Solution - 250ml
new

Two Little Fishies AccuraSea Seawater Calibration Solution - 250ml

Regular price $14.90 CAD
$14.90 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.