The Coltiva system

One control unit, a set of sensors, and up to eight pumps — sized to your reservoir and how much you want to run from the app.

Kits

Start with sensors, add pumps when you’re ready to dose from the app.

EC kit

7 997,50 kr

Track nutrient strength and reservoir climate.

  • EC sensor
  • Water temperature sensor
  • Air temperature sensor
  • Humidity sensor
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All Sensors kit

9 890,00 kr

Add pH and water level for the full picture.

  • Everything in the EC kit
  • pH sensor
  • Water level sensor
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Sensors + pumps

All Sensors + Pumps kit

From 11 123,75 kr

Sensors plus pumps — dose and refill the reservoir from the app.

  • Everything in the All Sensors kit
  • Circulation / refill pumps (3, 6 or 8)
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Specifications

Real numbers for people who plan around them.

Sensors
Sensor Range Accuracy
pH 2.5 – 11 pH ±0.15 pH
EC (conductivity) 0.0 – 4.0 mS/cm ±0.15 mS/cm up to 2.0 mS/cm, ±0.3 mS/cm above
Water level 30 – 1800 mm ±1.5 mm
Water temperature 0 – 65 °C ±0.75 °C
Air temperature 0 – 65 °C ±0.75 °C
Humidity 0 – 100 %RH ±3 %RH
Pumps
Pump Flow Accuracy Notes
Peristaltic pump 100 ml/min — Min. dose > 5 ml · 3 m head height
Centrifugal pump 4 l/min ±10% Min. dose > 0.5 l · 3 m head height
System
Pumps supported Up to 8, in any mix of peristaltic and centrifugal
Connectivity Wi-Fi, connects to the Coltiva cloud and app
Power supply 12 V DC, center-positive plug, 1 A ± 0.05 A
Mounting Sliding mount — attach and remove without tools
Operating conditions (control unit) 0–50 °C, below 85% RH, out of direct sunlight
Operating conditions (peristaltic pumps) 0–45 °C, below 85% RH

Components

Every sensor and pump connects to the control unit through a single weatherproof connector.

The Coltiva pH sensor probe, shown next to an apple for scale.

pH sensor

Reads the acidity of your nutrient solution so you can dose pH+ or pH- to bring it back in range.

The Coltiva water level sensor, a white disc on a cable, shown next to an apple for scale.

Water level sensor

Mounted above the reservoir, it tracks the water level so you know when to top up.

A pair of Coltiva peristaltic pumps mounted on an oak block, with dosing tubes running to the reservoir.

Peristaltic pump

Doses small, precise amounts of nutrients or pH adjusters — as little as 5 ml at a time.

A Coltiva centrifugal pump on a suction-cup mounting bracket.

Centrifugal pump

Moves water in volume — circulating the reservoir, refilling it, or draining it completely.

The side of the Coltiva control unit, showing connectors for up to eight pumps plus sensors.

Up to 8 pumps

Mix peristaltic and centrifugal pumps to match your setup — each connects directly to the control unit.

A mounting plate holding the pH sensor and water level sensor in place above the reservoir with suction cups.

Sensor mount

Sensors attach to a shared mounting plate with suction cups, so everything stays in place above the reservoir.

The Coltiva control unit's sliding mount: rails on the unit slide onto matching rails on an oak block.

Attach and remove without tools

The control unit slides onto its mount and lifts straight off — no screwdriver, no rewiring. Move it, swap it, or take it with you.

Ready to talk specifics?

Tell us about your reservoir and what you’re growing, and we’ll help you choose the right kit.

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