Advice?: 1 mat, you do not dive the heat into the water. 2?; please note this is 21W heating mat, if your greenhouse, terrarium or fish tank is too big, maybe, it may not have enough heat. 3?; because it is precisely 21W, it does not heat up, once you leave the SPG.Supply, please wait for about 10~30 minutes, it heats up slowly. Germ heating mat for better Flower Veggie , herbs and seeds germination - Warms root zone 10 to 20°C ambient temperature. Dimensions: 52 × 25 cm. Power?: 21W, 220V~230V. Low energy consumption, simply in the sowing shell. They are also suitable for use in the terrarium area heating for greenhouses, fish aquariums, bierbrauen ect. Ideal heat source for an optimal supply of your terrarium, the mini greenhouse reptiles.
