Hows it going ladies and gents new to the site today. I have a 120 5ftx18"x24 high tank 2 penguin 350 biowheels 1 ac70 and a cascade 1000 canister. What I have is 2 oscars 3", 1 salvini 3" and a 3" convict I had a trio of clown loaches but the salvini and convict just abused them so I got rid of them. Am I pretty muched stocked with the 4 I have left or woul a school of 3 silver dollars be cool to add to the tank? I am not brand new to the fish thing but also not a pro tanks is established and water params are always in check!