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earthworm castings
The product measures pH from 0 to 14 and TDS from 0 to 1999 mg/L (ppm)
including ornamentals
Intelligent lamp ignition and power control
or greenhouse crops
Active Air CO2 Test Kit organic earthworm castingsWe recommend measuring CO2 periodically to ensure optimum levels for growth. The Active Air CO2 Test Kit is an inexpensive alternative to costly electronic monitors. Use the tester kit to gauge proper CO2 level, as well as eliminate waste and optimize growth. The kit is inexpensive and easy to use, and includes instructions.
US$ 1312.50
US$ 129.99
