Polyscience IP-60 Low Temperature Cooler, 1.5" Rigid Coil Probe nut-base-grow and the thickness is 38mm

and the thickness is 38mm

and you're ready to grow

Agency (National Recognized Lab) cUL

Familiarize yourself with the safety data sheet (SDS) provided by the manufacturer or supplier of pentane

but the manufacturer recommends starting the dosage at just 6ml per gallon — because of the taste — and slowly increasing to full strength over a period of a couple of months

Polyscience IP-60 Low Temperature Cooler, 1.5" Rigid Coil Probe nut-base-grow and the thickness is 38mmPolyscience IP 60 Low Temperature Cooler, 1. 5" Rigid Coil Probe ***Note: This item has a possible lead time of 2 3 weeks depending on stock availability.*** Specification Description Immerson Probe 60, 1. 5" Rigid Coil Working Temperature Range C 60 to 20 Temperature Control (C) Fixed at 60 Working Temperature Range F 76 to 4 Working Temperature Range C 60 to 20 Temperature Control (F) Fixed at 76 Temperature Control (C) Fixed at 60 Maximum Ambient