Product description
Aqua Master E300 Pro2 Substrate EC and Temperature Meter: measuring, monitoring and adjusting
Precise control of nutrient concentration in the root zone
The Aqua Master E300 Pro2 is a high-quality EC and temperature meter developed specifically for measuring in solid growing media such as soil, coco or rockwool.
It lets you directly monitor the electrical conductivity (EC), and therefore the salt content, in the root zone – a crucial factor for healthy plant growth.
With its robust stainless-steel electrode, precise temperature compensation and easy calibration, the E300 Pro2 is an essential tool for anyone who wants to keep their feeding perfectly balanced.
Benefits of the Aqua Master E300 Pro2
Accurate EC measurement directly in the medium: ideal for soil, coco and hydroponics.
Integrated temperature measurement: monitors conditions in the root zone.
Digital display: clear, backlit LCD with stable readings.
Automatic temperature compensation (ATC): precise results at any temperature.
Waterproof & robust housing (IP67): built for daily use in the grow room.
Simple one-button calibration: quick adjustment with calibration solution.
Long-lasting electrode: designed specifically for dense media and repeated measurements.
Specifications – Aqua Master E300 Pro2
Use & care
Carefully insert the probe into the moist growing medium.
Wait until the EC reading is stable.
After use, clean the electrode with distilled water.
Recalibrate regularly with EC calibration solution to ensure accurate readings.
Tip: Measure the EC regularly during the flowering stage – this helps you avoid overfeeding and keep the nutrient balance constant.
Ideal for:
Soil, coco & hydro systems
Professional grow tents & grow rooms
Growers who need precise EC readings
Use alongside pH meters such as the Aqua Master S300 Pro3
Buy the Aqua Master E300 Pro2
With the Aquamaster E300 Pro2, you stay in full control of the nutrient concentration in your growing media.
It offers precise readings, easy operation and long-lasting quality – ideal for professional use in indoor and outdoor grows.



