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Great for small gardens
measuring cup for soil testing
Grow Flow is available as a 12-site Complete System
Fully Customizable
CO2 and more
edge Compatible Digital DO/Temperature Electrode Terp Derp Great for small gardensThe HI 764080 is a digital dissolved oxygen electrode with built in temperature sensor. This ultra thin, Clark type polarographic electrode is designed for measuring DO in aqueous solutions and contains a built in microchip that stores sensor type, serial number, and calibration information. The sensor features a platinum cathode with a silver silver chloride anode, an integrated temperature sensor, and easily replaceable PTFE membrane caps. This