Seriously Tropical Nic Salt Doozy Vape. DOOZY SERIOUSLY TROPICAL NIC SALTS 5mg,10mg & 20mg Nicotine Strength. 10ml Salt Nicotine E-Liquid. Seriously Tropical Nic Salt e-liquids feature a 50% VG and 50% PG Blend providing a discreet amount of cloud, unlike the large cloud production from 70%VG liquids.