Im picking up a used 55 gallon. They used it for turtles and fish and it was emptied last week. I havent seen it since emptied. Its 2yrs old. Should i leak test? For how long. I have a 36 sitting in an apartment i need to move asap so we can close the apartment out. Their reason for selling is to get a 75 to sit in that same spot. They are swapping over this week so i can pick up. I just moved into our house so i will set it up in the garage and fill it. Will a couple hours be safe?