GroLine Storage Solution Size:230mL The original Building-Block Nutrient System

The original Building-Block Nutrient System

For those gardeners who want the benefit of a liquid bonemeal but have issues with the farming practices of livestock

Hugo is the largest of the growing blocks

01) or single-point pH and EC calibration with the Hanna Quick Cal calibration solution

POWDERY MILDEW

GroLine Storage Solution Size:230mL The original Building-Block Nutrient SystemGroLine storage solution prepared with reagent grade chemicals that can be used to ensure optimum performance of your pH and ORP electrodes. It is necessary to store a pH electrode in a solution in order to keep the glass membrane of the pH electrode hydrated. Ideally a storage solution should be used; never store an electrode in distilled or deionized water. The GroLine storage solution is specifically formulated to minimize microbial growth and to