Vostermans Varifan Variable Speed Drive with Manual Override Size:40 Amp Application RatesAdd 2-5 mL of

Application RatesAdd 2-5 mL of Grow B per gallon of water during the vegetative growth phase

Includes blade cap for safety

Boric Acid

It is designed to be very energy-efficient

Vostermans Varifan Variable Speed Drive with Manual Override Size:40 Amp Application RatesAdd 2-5 mL ofAvailable in three different models that have a 0 10 V or 4 20 mA input signal. Easy to access toggle switch to select manual or automatic mode as well as a manual speed selector dial on the faceplate. Internal minimum speed adjustment with possibility to work continuously at minimum speed. Comes in a rugged, sealed enclosure that protects from light, moisture and dust. Includes extended supply voltage range and a radio interference filter.