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This is the RH level for material moving through to a customer rather than sitting long term
VPS Structure facilitates the plant cell wall polymerization and transpiration
Two things to confirm first
Phosphorus (P): 0
THE BIGGER YIELDS FLOWERING SYSTEM ® - PROFESSIONAL LEVEL ®
Bluelab Replacement pH Probe 401 to 600 CFM This is the RH levelA replacement probe for Bluelab Combo and pH Meters as well as the Bluelab Guardian Monitor. The Bluelab 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 and will eventually fail. With good care and use (keeping the probe tip wet and cleaning once a month) you will extend its life. The Bluelab pH Probe