Best top off system?

[Hustler]

Now I have to try and find a good reservoire that isnt too ugly LOL.... Or a way to get it set up in another room and run to the tank?
anyone have a large capacity thinner and taller kind of setup?
Also do you have a powerhead in there too to prevent stagnent water?
It looks like im loosing about 4 gallons a day.......... So it will have to hold a fair bit.