Dude she is already obsessed. Talking about tanks we have zero room for lolDepending on the bioload of her new aquarium you may see a small mini-cycle which is easily fixed with water changes. My display tanks are overstocked so the loaded sponges or biorings has never ever experienced that as my QT or fish room tanks aren’t typically stocked very heavily.
It’s cool she’s interested in the hobby! It’s never been something my lovely bride has ever really shown interest in, maybe she’d be better off as an ex-wife, Lol.