Boy did I just screw the pooch! I soaked my brightwell brick in MB7 overnight. I placed it in my sump and poured the water in on my way out the door. I came home to a rotten egg smell an hour later. My border line full skimmer cup over flowed all the contents back into the tank! First of all skimmer should have been off when adding mb7 durrrr! I didnt rinse the brick and I think that's what triggered the overflow of the skimmer.
I'm currently doing a slow water change via my skimmer overflow tube. Just letting it run into a 5g bucket until it normalizes, then I'll perform a large water change. I'm pretty dang nervous about how much was in that skimmer cup, LOTS, and how new this tank is. The only think I have going for me is the ton of MB7 I added to that brick. No doubt its got food to feed the bacteria! Tank is completely clouded at this point though, fingers crossed.