Im subscribed. I just picked up a Fluval Spec V and am currently putting it together. To help out with your agitation, you could look into getting different pump, also, look to see if there are too many holes in your tube that leads from the pump to the outlet nozzle. I picked up a used one and there were about 10 holes that didn't allow for much flow. Anyways, there is give and take with the holes in the tube. Also, taking into consideration the lack of flow throughout the tank when setting up your aquascape may also help.
There are other options like clip on fans (although unsightly) that blow the surface of the water and there is also a spray bars.