Related Products
Related Products
GH PH Test Indicator Kit 1oz
General Hydroponics PH Control
$9.59
General Hydroponics pH Test Kits make pH testing easy. Simply fill a test-tube halfway with nutrient, add a few drops of pH Test Indicator and observe the coloration of the liquid in the test vial...
Active Air CO2 Test Kit (Clearance)
Active Air
$10.00
We 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...