Nutri LINK

What the nutriLINK Does

The Growlink nutriLINK is a purpose-built fertigation controller that sits at the center of your nutrient delivery system. Its 8 universal outputs each connect to a dosing pump — giving you enough channels to handle base nutrients, additives, pH-up, pH-down, and any supplemental inputs your recipe calls for, all from a single device.

Integrated sensor inputs for pH, EC, and flow mean the controller isn't working from a fixed schedule in isolation. Every dosing decision is grounded in real-time feed data: actual pH and EC readings at the point of delivery, and flow confirmation that tells the system whether the dose was actually delivered. That feedback loop is what separates closed-loop fertigation from glorified timer control.

The nutriLINK connects to the Growlink HUB and communicates through Growlink OS, the same cloud platform that manages your climate, lighting, irrigation, and substrate monitoring. All sensor data is logged, trended, and available for review — feed events, EC deviations, and pH drift are all visible in the same dashboard you're already using.

Who It's Built For

The nutriLINK is aimed at licensed cannabis and hemp operators who want hands-off fertigation consistency without the footprint and cost of a full-scale inline NDS skid. It fits well in single-room and multi-room facilities running batch tanks — particularly build-outs where you're already on Growlink OS and want to close the loop on nutrient delivery the same way you've closed it on irrigation and climate.

Operations scaling up from manual mixing will find the most immediate ROI here. When your team is manually adjusting EC and pH each feed event, batch-to-batch variance is unavoidable — especially across multiple rooms or multiple cultivars. The nutriLINK replaces that manual step with a programmed recipe the system executes the same way every time.

It's also the right spec for facilities that want Copilot crop steering to drive fertigation decisions, not just irrigation. The nutriLINK feeds live dosing and sensor data directly into Growlink Copilot, so the AI-guided crop steering program can factor actual nutrient delivery into its recommendations alongside substrate VWC, EC, and root-zone temperature.

Key Features

Eight universal outputs give you channel coverage for any commercial nutrient recipe: macro bases, micros, cal-mag, bloom boosters, pH acid, pH base — the controller handles the full stack without splitting across multiple devices or relay panels.

Integrated sensor inputs for pH, EC, and flow eliminate the need for a separate monitoring device inline with your dosing system. The controller reads pH and EC at the delivery point and uses flow sensor data to confirm pump performance, flagging deviations before they compound across a feed event.

Customizable dosing programs let your cultivation team build stage-specific recipes — propagation, early veg, late veg, transition, early flower, late flower, flush — and schedule them through Growlink OS. Once programmed, the nutriLINK executes the recipe without manual intervention, and all data is logged for historical review and cycle-over-cycle comparison.

Growlink Copilot integration means the nutriLINK isn't operating in isolation. Live dosing data feeds into Copilot's crop steering engine alongside substrate and canopy sensor readings, giving the AI a complete picture of what the plant is actually receiving versus what you programmed — and surfacing adjustments when the two diverge.

How It Fits a Larger Growlink Build

The nutriLINK is one module in Growlink's LINKS ecosystem — a family of purpose-built IoT devices that each handle one control category and connect through the Growlink HUB into a unified system. Alongside the nutriLINK, a typical commercial build might include the valveLINK for irrigation zone control, the canopyLINK for environmental monitoring, terraLINK sensors for substrate data, and the hvacLINK for climate automation.

All LINKS devices feed into Growlink OS, which means you're managing nutrient delivery, irrigation, climate, and lighting from a single interface rather than juggling separate apps and dashboards for each system. Blueprints — Growlink's SOP automation feature — let you encode your best cultivation practices as repeatable templates and roll them out consistently across rooms and cycles.

For operations that need to step up to facility-wide, inline nutrient injection with unlimited zone expandability, Growlink's Core Controller and NDS 2.0 platform provide that next tier. The nutriLINK is the right entry point for batch-tank-based operations; the LINKS architecture ensures you can scale into more advanced configurations without replacing the software stack you've already built on.