{"product_id":"809220-1","title":"Underground Heating Cable 320W","description":"\u003cp\u003e25-meter length, double insulated cable for approx. 5 m². 320W (without thermostat).\u003c\/p\u003e\n\n\u003cp\u003eHeated soil cable offers the most flexible way to provide bottom heat to your seed trays. The heat capacity can be increased by 1) placing the U-shaped windings closer together, 2) purchasing a higher wattage cable, or 3) sprinkling a thinner layer of sand on top of the cable. To prevent heat loss, it is advisable to use a polystyrene sheet as a base, then distribute the cable on top, followed by a layer of sand or a sheet of aluminum to spread the heat. The seed trays can then be placed on this. Use a soil thermometer (e.g. 809155 and 809157) to monitor the temperature.\n\u003cbr\u003eTip: for accurate temperature control, use the robust Thermostat (see 809244), which must be purchased separately.\u003c\/p\u003e\n\u003c!-- SEARCH-NAMES-START --\u003e\n\u003cp\u003eDenominations:\u003cbr\u003e\nAlso known as: Heating cable\u003c\/p\u003e\n\u003c!-- SEARCH-NAMES-END --\u003e","brand":"Vreeken","offers":[{"title":"25 m","offer_id":44177582620725,"sku":"809220.1","price":99.95,"currency_code":"EUR","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0606\/9092\/3573\/files\/809220.jpg?v=1750793724","url":"https:\/\/www.vreeken.nl\/en\/products\/809220-1","provider":"Vreeken's Zaden","version":"1.0","type":"link"}