Bluelab Replacement Soil PH Probe Green Hemp so you have no worries

so you have no worries about rusting

better yields

Most bloom fertilizer programs underplay potassium and nitrogen too much

BioBizz Bio-Bloom - 1L - Organic Plant Nutrient

Bluelab Replacement Soil PH Probe Green Hemp so you have no worriesBluelab Replacement Soil PH Probe Probes contain a KCl (Potassium Chloride) solution that allows it to measure acidity or alkalinity. Over time these probes can 'dehydrate' and need to be regularly maintained to ensure precise analysis. The Bluelab Soil pH Probe is a replacement pH probe (electrode) suitable for use with Bluelab products that test the pH value of a solution. Unfortunately pH Probes do not last forever as they age through normal use