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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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265 products

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

Test Kit

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

Regular price $19.65
Sale price $19.65 Regular price
Hanna Freshwater Alkalinity Checker

Test Kit

Hanna Freshwater Alkalinity Checker

Regular price $77.95
Sale price $77.95 Regular price
Hanna Magnesium Checker

Test Kit

Hanna Magnesium Checker

Regular price $87.95
Sale price $87.95 Regular price
Neptune Apex Pro aquarium controller package overview image.

Aquarium Monitor

Neptune Apex A3 Pro Aquarium Controller

Regular price $1,429.99
Sale price $1,429.99 Regular price
Hydros Automatic Fish Feeder
new

Aquarium Monitor

Hydros Automatic Fish Feeder

Regular price $58.20
Sale price $58.20 Regular price
Pinpoint Calibration Thermometer

Aquarium Monitor

Pinpoint Calibration Thermometer

5.0 out of 5 stars, 2 reviews
Regular price $14.50
Sale price $14.50 Regular price
Neptune Trident Testing System

Aquarium Monitor

Neptune Trident Testing System

Regular price $929.99
Sale price $929.99 Regular price
API Reef Master Test Kit

Test Kit

API Reef Master Test Kit

3.0 out of 5 stars, 2 reviews
Regular price $55.40
Sale price $55.40 Regular price
Pinpoint ORP Calibration Solution

Aquarium Monitor

Pinpoint ORP Calibration Solution

Regular price $5.30
Sale price $5.30 Regular price
Zoo Med AquaSun Aquarium Controller

Aquarium Timer

Zoo Med AquaSun Aquarium Controller

Regular price $40.10
Sale price $40.10 Regular price
Hydros System Command Bus Cable - 1 Foot

Aquarium Monitor

Hydros System Command Bus Cable - 1 Foot

Regular price $13.45
Sale price $13.45 Regular price
Hanna PH/Conductivity/TDS Tester - HI98129

Test Kit

Hanna PH/Conductivity/TDS Tester - HI98129

Regular price $241.95
Sale price $241.95 Regular price
Hanna Phosphorus Checker - High Range

Test Kit

Hanna Phosphorus Checker - High Range

Regular price $52.37
Sale price $52.37 Regular price $77.95
Hanna Marine Multiparamater Photometer

Test Kit

Hanna Marine Multiparameter Photometer

Regular price $639.95
Sale price $639.95 Regular price
Neptune Apex MXM Control Module

Aquarium Monitor

Neptune Apex MXM Control Module

Regular price $199.99
Sale price $199.99 Regular price
Neptune Apex aquarium controller package overview image.

Aquarium Monitor

Neptune Apex A3 Aquarium Controller

5.0 out of 5 stars, 1 review
Regular price $969.99
Sale price $969.99 Regular price
HYDROS Control XP8 Energy Bar

Aquarium Monitor

HYDROS Control XP8 Energy Bar

Regular price $493.65
Sale price $493.65 Regular price
Red Sea Reef Foundation Pro Test Kit

Test Kit

Red Sea Reef Foundation Pro Test Kit

Regular price $115.99
Sale price $115.99 Regular price
Neptune Trident Reagent 2

Aquarium Monitor

Neptune Trident Reagent 2

5.0 out of 5 stars, 1 review
Regular price $71.99
Sale price $71.99 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

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.