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Collection: Controllers & Monitors

Aquarium controllers, monitors and automatic testers — from a single-parameter readout to a full system running dosing, lighting and alerts. A controller is only as reliable as the probes feeding it.

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138 products

Pinpoint pH Calibration Solution 7.0

Pinpoint pH Calibration Solution 7.0

5.0 out of 5 stars, 2 reviews
Regular price $1.80 CAD
$1.80 CAD
Pinpoint pH Calibration Solution 10.0

Pinpoint pH Calibration Solution 10.0

5.0 out of 5 stars, 3 reviews
Regular price $1.80 CAD
$1.80 CAD
Neptune Trident Reagent 6

Neptune Trident Reagent 6

4.0 out of 5 stars, 2 reviews
Regular price $159.99 CAD
$159.99 CAD
Pinpoint pH Calibration Solution 4.0

Pinpoint pH Calibration Solution 4.0

5.0 out of 5 stars, 2 reviews
Regular price $1.80 CAD
$1.80 CAD
Pinpoint pH Probe Replacement

Pinpoint pH Probe Replacement

3.5 out of 5 stars, 2 reviews
Regular price $60.10 CAD
$60.10 CAD
Neptune Trident Reagent 2

Neptune Trident Reagent 2

5.0 out of 5 stars, 1 review
Regular price $71.99 CAD
$71.99 CAD
Seneye Slide Pack (3 Piece)

Seneye Slide Pack (3 Piece)

Regular price $60.20 CAD
$60.20 CAD
Neptune Trident Reagents  economy pack on sale

ABC Reagents for Auto Testers - 6 Month Supply

5.0 out of 5 stars, 1 review
Regular price $114.95 CAD
$114.95 CAD
Pinpoint ORP Calibration Solution

Pinpoint ORP Calibration Solution

Regular price $5.30 CAD
$5.30 CAD
Neptune Trident Testing System

Neptune Trident Testing System

Regular price $929.99 CAD
$929.99 CAD
Neptune Apex 24VDC Solenoid Valve

Neptune Apex 24VDC Solenoid Valve

Regular price $79.99 CAD
$79.99 CAD
Pinpoint pH Monitor

Pinpoint pH Monitor

Regular price $123.25 CAD
$123.25 CAD
Neptune Trident NP Reagent 2 Month Kit

Neptune Trident NP Reagent 2 Month Kit

5.0 out of 5 stars, 2 reviews
Regular price $84.99 CAD
$84.99 CAD
Pinpoint ORP Monitor

Pinpoint ORP Monitor

Regular price $187.35 CAD
$187.35 CAD
Neptune Apex EnergyBar 832

Neptune Apex EnergyBar 832

Regular price $469.99 CAD
$469.99 CAD
Seneye Reef Monitor for aquariums

Seneye Reef Monitor

5.0 out of 5 stars, 1 review
Regular price $315.00 CAD
$315.00 CAD
Neptune Apex FMM Optical Sensor

Neptune Apex FMM Optical Sensor

Regular price $64.99 CAD
$64.99 CAD
Neptune Apex Flow Monitoring Module (FMM)

Neptune Apex Flow Monitoring Module (FMM)

Regular price $229.99 CAD
$229.99 CAD
Neptune Flow Sensor - 1 Inch

Neptune Flow Sensor - 1 Inch

Regular price $129.99 CAD
$129.99 CAD
Neptune 1LINK Cable - 10 Foot Male/Male

Neptune 1LINK Cable - 10 Foot Male/Male

Regular price $49.99 CAD
$49.99 CAD

Why Automate Your Water Chemistry

A controller does what a test kit can't: watch continuously. Temperature, pH, ORP and salinity get logged around the clock, and outlets switch on rules you set — so a failed heater or a stuck float valve triggers an alert instead of a disaster. Systems here range from a single-parameter monitor to a full controller running dosing, lighting, return pumps and automatic testing.

Choose by How Far You Want to Go

  • Single-parameter monitors — a dedicated pH or ORP readout, no computer or app needed.
  • Full controllers — modular systems with expandable outlet bars, flow and leak sensors, and app control.
  • Automatic testers — unattended calcium, alkalinity, magnesium, nitrate and phosphate testing, with reagents stocked separately.
  • All-in-one monitors — combined water quality and lighting measurement from a single unit.

Reagents, calibration solutions and replacement probes are consumables: order them alongside the hardware so a checker or tester doesn't sit idle waiting on a refill. Not sure which system suits your tank? Email sales@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.