OK so you got the filter that good, you won't need an under gravel filter unless u want one. know you need to get a heater,gravel,plants( recommend fake for starters),rocks, lots of hiding places is one way to put it. you also need net,water treatment,fish food(can get when you get your fish),lighting hood. then you want to fill up the tank put in the amounts of drops of water treatment needed,turn on filter (some need water in them before u should turn them on),heater should be in the water for about half an hour to an hour before you turn it on because it could crack.then wait a about a week before getting any fish also when you get fish only get less than 4 a week. that's if your setting up a tropical fish tank,if your setting up a salt water i don't know how to help you there.yeah that's about it so u need Filter,Heater,Gravel,A lot of hiding places like plants rocks,light hood, and if you want to make it more cooler then get a air pump and get some bubbles in you fish tanks it cool,might want to add a background. and it also depend if your getting community fish, aggressive fish. 1inche. of fish per gallon so you can get fish that add up to 135 inches. yeah that's about it.