Pay in 4 interest-free payments of $39.99 Learn more
Ships within 48 hours · Estimated delivery Sep 4 - Sep 9
or wasting valuable electronic resources running cooling fans or other unwanted devices
and organic nutrients
It provides support for beneficial soil microbes to enhance vigorous roots and plants and is OMRI AND OIM certified
This Item is Special Order only
PurGro GroBot pH Probe, Industrial Replacement growing-accessories or wasting valuable electronic resourcesThese don't look like the ones from the hydro store because they are double junction, flat surface pH probes typically used in chemical plants for process control. They last longer, stay cleaner and are built to mount in line inside your GroBot Evolution. Cost a few bucks more, but these are the good ones. Proudly made in the USA.
US$ 222.50
US$ 25.00
US$ 95.00
US$ 112.50
US$ 108.00