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Sensi A & B base nutrients are easy to measure because there are only two components and have their nutrient ratios based on thousands of test gardens and research
Synchronized outlets: Exhaust and CO2 outlets swap so the two never run against each other
it's an indispensable tool for achieving optimal plant growth and yield
Nitrogen leads in Grow
Ruck 4" Back Draught Damper for Ducting Soil Secrets Sensi A & B baseBack Draught Shutter for 4" Duct Systems The Ruck 4" Back Draught Damper is an essential component for maintaining efficient airflow in ventilation systems. Built with a durable galvanized sheet steel housing, it prevents reverse airflow by automatically sealing off when the fan is off. The spring loaded aluminum flaps respond to active airflow and remain closed when idle, assisted by a secure rubber seal. This back draught shutter is suitable for