can't u just google something simple like this? not trying to be rude, but i notice alot of "can i this ...75g", "will this work...75g", "lighting... 75g", and many of the recent ones are all written by you. Granted i am in a terrible mood and in a fight with my girlfriend at the moment, but I just don't believe in filling the recent topics list with one persons thread spam that often contains "one-liner" questions whose answers are available all over the internet. Try to consolidate your questions and research the easy ones on your own time. Hit us up with the difficult ones. This is just general forum etiquette.
/end rant
On to your question. You will learn that "turn over" is only part of the equation when trying to figure out flow. A lot of people say at least 3-6 times turn over per hour. 225-550gph. Again, you need to consider the fish you are planning on keeping since not all fish tolerate flow as well as others. Discus for instance despise it, as well as bettas. Just search profiles and other forums and your answer will be there, often in plain sight, with exactly the same fish "stocking" that you plan on having.
/end rant
On to your question. You will learn that "turn over" is only part of the equation when trying to figure out flow. A lot of people say at least 3-6 times turn over per hour. 225-550gph. Again, you need to consider the fish you are planning on keeping since not all fish tolerate flow as well as others. Discus for instance despise it, as well as bettas. Just search profiles and other forums and your answer will be there, often in plain sight, with exactly the same fish "stocking" that you plan on having.