My overflow box isn't draining the water quick enough. I have a eshopps pf-1200 overflow box and use a 200gph pump. The maximum flow for the boc is 1000gph. The inside black box remains completely submerges. Here is my set up.
[youtube]WwXuiXzj3pc[/youtube]
[youtube]WwXuiXzj3pc[/youtube]