I have a 150 Gallon community aquarium, 10 Discus, 6 angels, 4 clown loaches, 30 cardinal tetras, a couple of German Blue rams, 6 Albino Cory's and a Gold Nugget Pleco. It is all live plants and the tank is built into the family room wall, has continuous drip RO water system with overflow, 3 Fluval 405 filters and undergravel filters with power 2 heads. It has been setup like this for 4 years and I feel like I don't keep fish anymore, because the maintenance is almost nothing, other than vacuming grave twice a year and wiping the glass with a magnetic cleaner.
I keep reading about these huge homeade tanks on this site and my dream and plan is to build a tank big enough that my Discus will someday escort a family out from a quiet driftwood filled area in the aquarium.