yeah you will need alot of filtration becasue when i had my oscar in my 55 he was always making a mess when i fed him brine shrimp cubs he would eat them so fast that he didnt always eat it all but you should have good filtration and i had an 2 ac 70 on mine and it did the job you could put a few clown loaches for the bottom of the tank
i dont know it is like only 200 gallons an hour and you are goin to need more but if you do that get a under gravel filter and a power head with revers flow and put it on the under gravel filter and it will push all the food and anything that settles on the bottom of the tank to the filter and you dont haft to clean your gravel very often like once every two months the heater will do fine but what kinda fish are you looking for the bottom of the tank
yeah it will do good in the tank and i would put like 4 pictus cat if you like movment you willl get that from them and that is what i like is alot of movment