Nobody answered, what a shame. Please, if you'll back tell me how did it go with that new tank.
As for the ants, well, it's bad to have them there. You had a nice idea towards Windex with ammonia, but it's definitely not enough. I would recommend checking this article - https://pestcontrolhacks.com/ants-ho...of-sugar-ants/ especially the part about boric acid as well as a vinegar mixture. It should repel the insects for sure.