You are correct Ellisz, the megaflow overflow box is not setup to take the T. The drain pipe is in the way. I'm looking into other ideas but still have not decided.
The sad news now... my brand new 58 gallon has to be exchanged. There is a seal on the megaflow that is leaking, down near the bottom. I did a "smiluated" power outage today and discovered the leak. It would only take about 2-3 hours of no power for the main tank to overflow the sump... not good says the wife!
Now I have to empty the entire tank, water, rock, and sand... wait a day for the new tank to arrive and strart over!