After a horrible Velvet outbreak, and only 4 fish surviving, I have taken all fish out of the tank, rearranging the rock scape. The remaining Fish are in quarantine for two months with cupramine dosing.
I had lost over 20 fish, and will not be going without quarantining fish again.
While the rocks were removed I pushed the sand to the front of the tank removing over 4 bags of ReefFlakes. For easier maintenance I will keep behind the rocks with little to no sand and a 3/4" sand bed in the front where people can see.