I went with the timer idea to save a bit on energy. The Hammerhead is rated @ 3.89Amps 4-way 17W will save a bit here only running 8hrs a day. Plus without the hammerhead and 4-way running at night should give a calmer effect like in the Ocean at night.
I have 2 outlets with 45's pointing down on the right of the tank. The one in the middle covers the center of the tank. The last outlet is on the left end with a 45 down. My return outlet is also on this side with a 90 blowing across the top of the water.
Yes the top will be boxed in with green board. I will have a few doors to access the tank.