I found this shelving unit from Lowe's that fits two 40 gallon breeder tanks perfectly. This means no more tanks on the floor of my dining room! This is only half of the shelf, it can actually hold four tanks. It's nice because it's heavy duty and can certainly hold the weight, but it also has a polished look to it so it doesn't seem too terribly out of place in my living area.
Link → Edsal Steel Shelving Unit
My new fish, Navi, is being quarantined in the bottom tank and my 3-week-old butterfly fry are up top (yes, I'm raising fry again!). Once Navi's quarantine is over, I'll be able to move half of the fry to the bottom tank to give them more space to grow out. I'm loving this setup! In fact, I'm super tempted to run out to Petco the next time they have their dollar-per-gallon tank sale and grab two more 40 gallon breeder tanks so I can set up the other half of the shelf too... who needs a dining room when you can have a fish room, right?!