Welch DuoSeal Vacuum Pump Oil, Gallon 1407K-15 AIR FILTER BOXES *Please Refer to these charts

*Please Refer to these charts for vacuum specifications at altitude and conversions:

Nutrient & Temperature

Drench application is favored for diseases affecting roots

and then you can start to use the system and enjoy the excellent water filtration

Arriving fully assembled at 39 inches long

Welch DuoSeal Vacuum Pump Oil, Gallon 1407K-15 AIR FILTER BOXES *Please Refer to these chartsWelch DuoSeal Vacuum Pump Oil, Gallon 1407K 15 ***Note: This item has a possible 1 2 week lead time depending on stock availability*** Welch fractionated oil for DuoSeal belt driven pumps to ensure the highest vacuum performance. DuoSeal Oil performs to rigid standards for vapor pressure, vacuum level stability, and viscosity the lubrication that helps enable renowned DuoSeal pump durability.