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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

Seneye Web Server with WiFi (SWS-WIFI)

Seneye Web Server with WiFi (SWS-WIFI)

Regular price $462.00 CAD
$462.00 CAD
Pinpoint Alkaline Water Polishing Strip

Pinpoint Alkaline Water Polishing Strip

$9.00 CAD
Sale price $9.00 CAD Regular price $11.70 CAD
Neptune Apex Junior aquarium controller package overview image.

Neptune Apex A3 Junior Aquarium Controller

Regular price $469.99 CAD
$469.99 CAD
Hydros Control X3/XP8 Pro Pack components and accessories for an aquarium.

Hydros Control X3/XP8 Pro Pack

Regular price $864.75 CAD
$864.75 CAD
AvidAqua ModMag
new

AvidAqua ModMag Giga

Regular price $48.20 CAD
$48.20 CAD
AvidAqua Insight Pro Aquarium Controller Display
new

AvidAqua Insight Pro Aquarium Controller Display

Regular price $293.75 CAD
$293.75 CAD
Hydros Kraken Power Center

Hydros Kraken Power Center

$727.72 CAD
Sale price $727.72 CAD Regular price $984.05 CAD
Coralvue Black Aquarium Controller Board

Coralvue Black Aquarium Controller Board

Regular price $209.95 CAD
$209.95 CAD
Hydros Control XD Aquarium Controller

Hydros Control XD

$241.52 CAD
Sale price $241.52 CAD Regular price $352.60 CAD
Buy Hydros Control X4 in Canada

Hydros Control X4

Regular price $616.65 CAD
$616.65 CAD
Nyos Calcium Test Kit
new

Nyos Calcium Test Kit

Regular price $34.95 CAD
$34.95 CAD
AvidAqua MPO Quattro Probe Organizer
new

AvidAqua MPO Quattro Probe Organizer

Regular price $67.15 CAD
$67.15 CAD
Hydros Control X3-Salinity Controller

Hydros Control X3-Salinity

Regular price $368.95 CAD
$368.95 CAD
Hydros iV Pro Isolated Testing Vessel

Hydros iV Pro Isolated Testing Vessel

Regular price $327.95 CAD
$327.95 CAD
Hydros Kraken Force Port Power Cable

Hydros Kraken Force Port Power Cable

$22.86 CAD
Sale price $22.86 CAD Regular price $25.40 CAD
Coralvue Mini Black Aquarium Controller Board

Coralvue Mini Black Aquarium Controller Board

Regular price $169.95 CAD
$169.95 CAD
Coralvue Controllers & Monitors

Hydros Tunze Wave Engine Pump Adapter

Regular price $25.40 CAD
$25.40 CAD
AvidAqua ModMag
new

AvidAqua ModMag Mega

Regular price $37.15 CAD
$37.15 CAD
AvidAqua Insight Aquarium Controller Display
new

AvidAqua Insight Aquarium Controller Display

Regular price $235.00 CAD
$235.00 CAD
AvidAqua MPO Duo Probe Organizer
new

AvidAqua MPO Duo Probe Organizer

Regular price $58.70 CAD
$58.70 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.