I thought about that route. But this was so much easier.
Each container is a "bio tower".
There is a basket with filter media both blue and 100 micron pads.
The water then drains over about 3-4 gallons of blue bio balls.
Just rinse each pre filter basket.
And the sponges on pumps
Filled it up via bath tub hose. The chamber that will have a filter block bended while water was only on one side. But evened out once it filled up. And it will have a block of filter material so I figure that will help create resistance and help it not bend as much.
get one of those acrylic sock holders and put it in with the skimmer. You don't want any large particulate matter getting into the sump at all. It will eventually build up on the bottom, and will be hard to remove. Most people's sumps are in the stand and they can't get a siphon hose in there to vacuum. You'll have to find a self priming pump to do this. It's just easier to use the filter sock.
The pipe was Going to go in the overflow. Like a 2' pipe so if power goes out my sump doesn't flood. And then on the bottom of the tank I will have one of those tubes connected to it leading into the filter sock