Sorry I kind of keep asking the same questions but I'm new to the whole turtle mama thing. I was thinking of getting a 40-55 gal tank and I was wondering if it mattered if it was the long kind or not. If it's the regular kind you can just fill it up with more water right? I was also wondering what kind of canister filter I should get for this size tank. Thanks in advance. You all have been so helpful to me already! 

