I'm a 14year old he...on xmas my dad helped me plumb the tank. We did a fw test then drained the tank through the canister, theres and air valve and he thought you could just take it off, I had a slight bit of water on my floor. Thanks for the comments. I also have a question, I have on snail that keeps on trying to get out, what should I do, I don't wanna rip his shell of him