Waterproof pH/Temperature Meter plant-support It is critical that plants

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

This is achieved by the geometry of its patented reflector

Carefully clean for reuse

worm castings

For indoor use only

Waterproof pH/Temperature Meter plant-support It is critical that plantsHM 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.