That looks nice! I have some aquarium filter media in the top pan which has increased my flow immensely. When I swapped the pump out to a 1/2 hp it would run the bin dry before more fluid could get in there because the holes were clogged up. By cleaning up the chip tray and putting in the filter media (and drilling a few 1/2" holes in the tray) I have increased the flow rate from the tray to the tub. Adding a filter would be a good idea for me, as I could use a bit more reduction in flow at this point!