Instruct: Classify Amazon reviews into positive or negative sentiment
Query: NOT 4 Gallons in the Tank

The vaporizer holds 1.7 Gallons, generously counting tank+base. In practice, because I don't fill the base, a bit more than a gallon.The vaporizer has a daily rate of 4 gallons (Thus the name). To keep it going for a full day, you have to fill it up 3 times. Effectively, it doesn't run for a full night because the tank isn't big enough.4 Gallons is a Misleading description because many would assume it refers to the tank.It does otherwise match the picture and description, and is a quite nice vaporizer.