Under $200
------Home Depot sand
------Fill the tank with Vallisneria plants
------Two 100 watt heaters set up at 78 degrees
------Start with a dozen "dimers or quarters..."The size they usually sell a dozen for $80-100 o the internet......half inch......
------Purchase two AC70's or one AC101
------Purchase an internal filter, preferrable a Fluval U4
Optional:
------Setup a spare 30g breeder and raise Convict cichlids to feed to your NAtts
------Building your own wet dry filtration setup will cost under $100