i have a canister filter, a 360 gph pump, a heater (no idea got it used but it works well ), a light for my fish that can be used for low light plants and its all in my 75 with 3 clowns ( they get along very well ), a rabbit fish (fox face ), and a lawnmower blenny ( for some reason the fox face is on top of or leaning next to the blenny when we leaves the rocks ). and im starting to research and save up for equipment to CONSIDER corals or anemones (they require lots and as i said i cant waste money and i dont want to kill them corals and anemones are living just like fish) so that is my set up. ( also have testing kit, net , 13 gallons of reverse osmosis carbon filtered .... ext on ready, lots of salt, a extra 30 gallon tank that currently has a 50 gallon filter keeping it good and its a backup. )
and when i said consider i would need a skimmer which is expensive and normally go in sumps and what also lead to this question being asked i would also need stronger and better lights and just time for a stable tank