Herbal tanks are intended to be used with herbal substances and it will not work with e-liquids. Some tanks can be used with flowers, dry herbs, tea leaves, and tobacco. Others are intended with wax, essentials oil, and concentrates. The Cloupor Cloutank M3 can used with most substances with its ability to change heating coils depending on the elements. The EXgo W1 and W3 wax tank uses Nero technology that heats up much faster than usual wick and coil. The herbal and wax tanks are available in 510 or eGo threading depending on the model, and it can be used with most batteries and mods.