Argh! I set up the tank and the wet/dry filter last night...I woke up this morning to find water in the basement.
Apparently, the sump leaks. So, I have to fix that problem now. I haven't been able to find a leak. Plus the Mag-12's are really strong. So strong I'm just using one and it's emptying the sump very quickly. I don't know if the sump is empty because it's leaking (the leak is slow) or because the Mag 12 is that strong.