Total Grow Control pH Probe HPS FTB is safe to use

FTB is safe to use right up until harvest without risk of harming the flavor or smell of your plants

ROOT 66's unique composition promotes the development of a well balanced root structure

A combination of the natural wetting agents yucca and quillaja

How do I choose between the 50E

Concentrated ready to spray formula only requires 2-3 seconds per 25 square feet of canopy

Total Grow Control pH Probe HPS FTB is safe to useTotal Grow Control pH Probe These industrial combination pH or ORP sensors use the conventional measurement technique, employing a process pH glass electrode (platinum for ORP) which is compared to a reference electrode in KCL solution. Total Grow Control's combination sensors have been completely modernized with several major upgrades. A new, more durable CPVC shell material provides excellent chemical resistance, and temperature compensation