To see a tank filled with water in your dream signifies prosperity and satisfaction with the current state of your life. You have complete control over your emotions. If there is a faceless human/fish-like creature inside the tank, then it implies that you are keeping an aspect of your emotions bottled up. You are afraid of confronting your own feelings.

To see a tank truck in your dream represents the need to defend yourself and stand up for your beliefs, even if it means being confrontational or violent. Alternatively, the tank symbolizes a threat. You are expressing your anger and feelings in a hurtful and volatile way and not letting anything or anybody stand in your way toward your goals.

To dream of a tank, foretells you will be prosperous and satisfied beyond your expectations. To see a leaking tank, denotes loss in your affairs.