The Aspire Tigon Coils are replacement atomizer heads for the Aspire Tigon tank.Coils with a resistance less than 1ohm are known as Sub Ohm coils. These coils require a lot of power and heat up very quickly. To make sure your E Liquid doesn’t vaporise too fast leading to burned coils, we recommend using a thicker High VG E Liquid like our 70/30 E Liquids (70% VG to 30% PG).Coils with a resistance above 1ohm are known as Plus Ohm coils. These coils don’t require as much power to heat up and don’t get as hot as their Sub Ohm cousins. Because of this, thinner E Liquid is used so the coil doesn’t get clogged up too quickly. We recommend using a thinner High PG E Liquid like our 50/50 E Liquid (50% VG to 50% PG).These coils will only work with the Aspire Tigon Tank.Aspire Tigon 0.4Ω Coil– Recommended 23-28wAspire Tigon 1.2Ω Coil– Recommended 20-25wIf you want to know more about E Liquid mixes and ratios, have a look at our E Liquid Guide. To learn more about coils and resistances, our Vape Coil Guide has all the information you need.