Funny you mention Poret foam! It was recently suggested to me. So I removed the media I was using in the sump-Eheim media in mesh bags, and restarted with two large custom pieces of Poret foam. I really love it so far. It looks as though it will keep the sump much cleaner. The bags just got nasty sitting down there, with no real good way to clean them.
So this tank is a standard 90 gallon with a built in overflow. 48X18X24" We use a Durso standpipe in the overflow, to cut down on the flushing sound. My hubby built the stand/canopy, which are connected, not separate pieces out of a pine frame and oak outside. The lighting is 2X 54 watt T-5 HO Guisemann bulbs, which is now kind of overkill without the live plants. The sump is a 29 gallon as mentioned, with a filter sock and the two pieces of poret foam which are situated between baffles. {I can take pics}
Then there is an older model external Blueline 850 GPH pump, which returns via Locline.