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620 OD (Fittings - 13 mm)
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The COMBO formula also includes a 20 ml sachet starter kit:
Detailed description:
Alfred's Waterproof Heat Mat 48" x 20.75" test 620 OD (Fittings - 13Alfreds Seedling Heat Mat will help to give your seeds and clones a strong and healthy start. Our heavy duty Seedling Heat Mat raises the germination and rooting area temperature to approximately 20F 11C above ambient temperature, encouraging rapid seed germination and the successful. Alfreds Seedling Heat Mat is made from highly durable, waterproof, industrial grade PVC. Thanks to the internal ambient temperature monitor, our heat mats provide
