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They are mesh on the sides and bottom for maximum aeration
600 and 1000 watt SUPER high output MH with maximized output in both blue and red spectral range
Ideal volumes of potassium and phosphorus complete Part-B while balancing to Part-A
water recirculation and more
Hanna GroLine Hydroponic Waterproof Pocket pH/EC/TDS/Temperature Tester HGC760848 They are mesh on theThe HI98131 is a slim, lightweight, and waterproof pocket tester that measures pH, conductivity (EC), TDS (ppm), and temperature. Simple, two button meter operation and advanced features, including a selectable EC to TDS conversion factor (0. 5 500 ppm and 0. 7 700 ppm). for your essential testing. All measurements in a single, hassle free tester. Quick Cal solutions to calibrate pH and conductivity all at once with a single solution. Perfect for