3 metre Soil Warming Cable 37 watt

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Used in the greenhouse border or in a sand bed, a soil warming cable can have a tremendous effect in promoting germination, striking cuttings or encouraging speedy early growth. Completely safe in operation, simply fit a standard plug. Adhere to electrical safety procedures. The area of coverage will be between 0.30 to 0.45 square metres. For a hotbed: 69 - 95 Watts/sq.m. of heating will raise the temperature by 5 - 8 deg  C. For a propagator: 95 - 130 Watts/sq.m will raise it by 8 - 11deg C.