What is sub ohm tank? Sub-Ohm vaping, otherwise called sub-Ohming. It alludes to vaping with an electronic cigarette that has a loop with an opposition level that is under one ohm. However, you can securely sub-Ohm vape on the off chance that you utilize premium materials; set aside the effort to comprehend the various loops, their wattage and which mix works best. Likewise guarantee that you don't overheat the battery while controlling the curls.