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Double-junction pH probe
1 x AQUAvalve cover
our coconut husk retains minimal salt
test the pH level after each addition of concentrate to gain an understanding on how it reacts to the water/nutrient formula
Safe to Use: The IP65 rating surface can meet your demand in different indoor planting environments
AC Infinity Backdraft Damper Ducting Insert - 4" Herbi Range Double-junction pH probeA ventilation ducting tool designed for insertion into ducting to prevent cold drafts and debris from flowing into ventilation systems. Built to be embedded in ducts, the backdraft damper is made of sturdy galvanized steel and features two rings of outer rubber gaskets. This enables it to grip your ducting with an airtight seal in either a horizontal or vertical orientation. The butterfly damper blades are made of aluminum and are equipped with a
