Waterproof pH/Temperature Meter plant-support and should always be submerged

and should always be submerged when heating water/nutrient solution

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Carefully clean for reuse

It is critical that plants not only get sufficient nutrients but also in the appropriate ratio

complete Nutrient feeding system

Waterproof pH/Temperature Meter plant-support and should always be submergedHM Digital PH 200 Water pH Testing Meter. Waterproof. Measure 0 14 pH. Temperature Tester, IP 67 rating, Factory Calibrated, ideal for all pH testing, water purification applications, wastewater regulation, aquaculture, hydroponics, colloidal silver, labs and scientific testing, pools and spas, ecology testing, boilers and cooling towers, water treatment, wine, coffee, agriculture and more.