GroStar GS1 pH Pen double-ended Soul Grow-N nitrogen supplement was

Soul Grow-N nitrogen supplement was specifically crafted for the gardener who demands faster growth from high-performance fertilizers

This blend has been proven to be an optimal all in one base 'bloom' horticultural fertilizer

Push the probe directly into the soil

which may be more strict than federal law

Digital ballast features low frequency

GroStar GS1 pH Pen double-ended Soul Grow-N nitrogen supplement wasIncludes: pH 7 & pH4 calibration solution (50ml bottle each), KCL storage solution (10ml bottle), lanyard and user manual Measures pH and temperature Premium probe technologies and materials ensure high accuracy and durability with minimal maintenance Easy to use design and fast calibration adjustment Double junction replaceable probe, so you dont have to discard the entire pen when the probe reaches its end of life Large 3 color backlit screen gives