I don't think they'll be an issue either based on the size of the fish. If you don't care for the fish themselves, that's a different issue. Go easy on the feeding and you should be fine. If it's a fish-in cycle that's worrying you, try Seachem Stability. It's the only product of its' type that I've ever tried and it does work well.
And it was a sweet and thoughtful gesture. Work with it if you can.
"Why can't my wife see all of this stuff as an investment?"