Aqua Master E300 Pro Substrate EC & Temperature Meter for Soil, Coco & Hydroponic Testing

The AQUA MASTER E300 Pro Substrate Meter is a professional handheld EC and temperature testing device designed for accurate measurement in soft, moist substrates and nutrient solutions. Ideal for hydroponics, coco coir, soil, propagation media, and fertigation systems, this compact digital meter delivers fast and reliable readings to help growers maintain optimal nutrient conditions. Featuring a durable near-unbreakable EC electrode connected via a flexible 90 cm cable, the E300 Pro is built for demanding cultivation environments. Its ergonomic rubber-backed housing ensures comfortable handling, while the simple one-point automatic calibration system allows for quick setup and consistent performance. Whether used in commercial horticulture or home growing systems, the E300 Pro helps improve nutrient management, plant health, and overall crop performance. Features Measures EC and temperature in substrates and liquids Suitable for soil, coco coir, hydroponics, and moist growing media EC measurement range: 0.0 – 19.9 mS/cm Temperature range: 0 – 50°C Fast and accurate readings with ±2% EC accuracy Durable near-unbreakable EC electrode for long-term use Flexible 90 cm probe cable for convenient operation One-point automatic EC calibration for simple setup Ergonomic rubber-backed housing for comfortable handling Compact lightweight design for portable testing Resolution: 0.1 EC / 0.1°C Weight: 171g Why You Should Buy The AQUAMASTER E300 Pro Substrate Meter is an essential tool for growers who require accurate nutrient and substrate monitoring to achieve consistent plant performance. Its durable design, precise readings, and easy calibration make it ideal for both professional cultivation facilities and hobby growers. By helping maintain correct EC and temperature levels, the E300 Pro supports healthier root zones, improved nutrient uptake, and stronger overall plant growth. FAQs What does the AQUAMASTER E300 measure? It measures electrical conductivity (EC) and temperature in moist substrates and liquids. What growing media can it be used with? It is suitable for soil, coco coir, hydroponic systems, and other soft moist substrates. Does the meter require calibration? Yes, it features a simple one-point automatic EC calibration system. How accurate is the meter? It provides accuracy of ±2% EC and ±0.5°C temperature readings. Is the probe durable? Yes, the meter includes a near-unbreakable EC electrode designed for demanding environments. Can this be used in nutrient reservoirs? Yes, it can measure EC and temperature in both substrates and liquid nutrient solutions. What is the cable length? The EC electrode is connected with a 90 cm cable for flexible operation.