You should be good. Just double check what the breaker is. 14 gauge wire is typically only capable of 15 amps.Thank you very, very much for the reassurance! I'm fairly confident in what I did. I pulled from a room on a circuit that literally gets almost no use. Right now all that's in the room is a wifi printer, so load is not an issue. I did pull from the last outlet on that circuit, and I installed a GFCI outlet at the tank. Both rooms are basic living spaces, not a bathroom or kitchen. My GFCI is functioning properly and my power strip is telling me that I have ground too. Only thing is I had to pig-tail the ground where I tapped into the existing circuit, but I think that's fine. I used all 14/2 Romex and a short piece of 12 gauge I hand on hand for the pig-tail. I think I'm good, but I really appreciate you taking a look at that