Tonight for feeding I first tried freeze-dried brine shimp/blood worms, and they really didn't have any interest. This was nearing 18 hours since feeders. Several hours later I tried frozen brine shrimp/bloodworms and again there was little interest in the brine shrimp. Bloodworms on the other hand were a hit, they went crazy for them once they figured out they should eat them. So...for now they'll be getting blood worms twice a day, and I'll try to mix in brine shrimp in smaller amounts and perhaps pellets in a few weeks.
For the stand, I put the side diagonal bracing in, and the stand feels like a tank. Two more diagonal braces in the back and it should be set. When I push back hard on the tank I can feel it rock a little, and can even slide some of the styrofoam a bit, but once water goes in I know it will compress the styrofoam enough that I am not worried. The tank is level and if anything the stand top is flatter and better supported than before. I will still fill to several increasing water levels, wait and test to confirm the styrofoam compresses.
Still on track to complete the stand structure by Wednesday and get back to completing the polishing and tank cleaning. Really don't want to hop back in the aquarium until the bracing is complete.