Fertiliser & Acid Dosing
Fertilizer injector- Best for
- In-line dosing with booster pump or feedback control, and buffer-tank dosing, under Heron controller management
ML Irrigation / Manufacturers / Heron Electric
Heron Electric
Heron Electric build controllers for protected cropping specifically, rather than adapting a landscape controller to the job. Irrigation control and dosing systems designed around how a nursery actually waters — multiple valves, repeated short cycles, and fertiliser going through the same lines.
Heron is a good answer where a landscape controller keeps almost doing what you need. If you have been working around a timer’s limits, tell us what it will not do.
Fertilizer injector 2
pH Dosing Systems
Fertilizer injector- Best for
- Direct acid dosing or circulating acid injection for water-storage tank acidification
AC Controller 6
HM-Pro Multi-Wire Controller
AC Controller- Connection
- 2 pump outputs · 4 inputs as standard (start, stop, weather station, flow meter) · up to 4 valves in parallel on one output
- Sizes
- Expandable by plug-in card to 96 valves with one expansion, 144 with two
- Best for
- Plug-in cards let you buy the valve count you need now and add more later rather than replacing the controller. Large graphical display with menu-driven operation. Integrates with Heron sensors or a full weather station, so irrigation can run off light, temperature, rainfall, soil moisture, wind direction or a calculated ET value — and moisture sensors can sit out in the crop. Dosing systems tie in directly. A hybrid version runs on mains or battery
HT-Pro Two-Wire Decoder Controller
AC Controller- Connection
- 1, 2 and 4 output decoders · 2 pump outputs with extremely high surge protection · 4 inputs (start, stop, weather station, flow meter)
- Sizes
- Up to 5 two-wire paths, each supporting 5 km of cable; additional cable drivers at 240 valves each
- Best for
- Two-wire means you run one cable and drop a decoder wherever a valve is needed, instead of pulling a wire back to the controller for every station. No special cable and no topology limits — branch it however the site demands. Same sensor, weather-station and ET integration as the HM-Pro
Environmental Controllers
AC Controller- Connection
- All outputs 24 V AC for driving relays; sensors connect via Heron digital link; digital input for the Heron weather station
- Best for
- Runs the glasshouse rather than just the irrigation — vents, heating and screens. Drives a hot-water motorised valve and a local circulating pump. Every output is general purpose, protected by an electronic overload cut-out, and surge-protected beyond ANSI C62
Weather Stations
AC Controller- Sizes
- Basic, Wind, Environmental and Full weather station
- Best for
- Feeds the controller a calculated ET value so watering tracks actual demand instead of a fixed clock. Programs can be selectively included or excluded from ET control, so a propagation bench on a fixed schedule is not overridden by the weather
Sensors
AC Controller- Connection
- Heron digital link
- Sizes
- Light (visible spectrum), air and pipe temperature, soil moisture (cage design), wind measured in 8 sectors
- Best for
- The inputs the HM-Pro and HT-Pro use to water on conditions rather than a timer. Moisture sensors go out in the crop; the cage design keeps root contact consistent
Web App / Remote Monitoring
AC Controller- Best for
- Operate and monitor the controller from a PC, tablet or phone — start programs, valves or pumps, adjust water budget, assign dosing recipes and flow meters. Alarms arrive by text or email to up to four numbers, and you can pull daily, weekly or monthly reports per valve and flow meter
DC Controller 1
HM Battery Controller
DC Controller- Connection
- Internal 1 Ah lead-acid battery with charging, 50 mA solar panel input or external 12 V; compatible with any 24 V AC solenoid valve
- Sizes
- 4, 8 or 16 valve outputs
- Best for
- For blocks with no mains power. Output voltage is boosted so cable runs can be longer than a battery controller normally allows, and it will charge from a solar panel. Multiple master valve and pump start outputs. Works with the Heron light, temperature, rain and humidity sensors