Over the years, I have had my guns in the basement, garage and boiler room. A few hours a day with the Goldenrod on a timer has worked for the last 15 years. The boiler room was a problem since my stocks shrunk and some got loose. Fortunately, they all came back when I moved.
I am not sure a live bait aquarium will be compatible unless you build a separate isolated area. Higher humidity in the summer plus a live bait aquarium does not sound like it should be near guns.

So many guns, so little time!