Bluelab PPM Conductivity Pen Oscillating and odor from a tent

and odor from a tent or to move air into a room

which suits product sitting in inventory rather than shipping out this week

Without it

The slim runs the length of the tube instead

E39 mogul to PGZX adapter that turns an HID hood into a CMH hood

Bluelab PPM Conductivity Pen Oscillating and odor from a tentBluelab PPM (Parts Per Million) Pen Testing Meter for Hydroponics and Solution Measuring Bluelab PPM Pen is the latest innovation for hand held conductivity meters and the ultimate handy solution for measuring conductivity. Hydroponic growing lets you give the best care possible to your plants. The quality of care is in your control. The Bluelab ppm Pen provides a compact, quick and handy way to manage the success of your crops to ensure they have the