Ok here's what I would do from ground up. 180 gallon 6ft tank perferably All glass Aquarium. Filtration: Fluval FX5 and a Eheim Pro III. FX5 for mostly mechanical and the eheim for bio. Then a large AC power head to get water circulation. Next decor: PFS bed with lots of driftwood and stones. A couple here and there plants. Stock: Red Tiger Motaguense, Midas, Amphilophus Facetum, bunch of dithers maybe SD's or some tinfoil barbs even though the tank would get a little crowded. Lighting I would be 50/50 T5 actinic lighting, plus a trio of lunar lights in the light hood. Heating would be two Ebo-Jager 250 watt heaters.