The size of the water tank in gallons depends on the size of the water tank. A gallon 128 ounces; To find the answer to this question, divide the number of oz in a water bottle by the number of ounces in a water tank.
1 gallon of water = 1.5 bottles per 16 ounces (1 half margin)
1 gallon of water = 7.1 16.9 ounces per bottle.
Now, how can we reach this conclusion? In general we must understand the units used for a simple bottle (in most cases it is in liters). Thus, the most common bottle used in daily life for the average user is a regular pet size 500ml bottle. Seven and a half bottles (7.57) of this kind are equivalent to one gallon. Since rounding may be required in this case, we set it to approximately 8.