Bluelab Conductivity Probe Care Kit Ducting and a pretty cool light

and a pretty cool light show

curling of leaves upward along margins and marginal yellowing

The choice is simple

cost effective solution to your plant growth needs – especially in the vegetative stages

20% Pyrethrin which is extracted from the seeds of the Chrysanthemum flower – mother nature’s naturally occurring insecticide

Bluelab Conductivity Probe Care Kit Ducting and a pretty cool lightThe Blue lab Probe Care Kit contains everything you need to clean and test conductivity (ppm) probes. A tip: If the conductivity reads low, the probe needs cleaning. The probe surface is where the instrument takes the reading of the solution. If the probe face is dirty or contaminated, then the reading will be inaccurate. Much like the windshield of a car, if it's dirty you can't see out! If the probe face is dirty, it cannot read the solution