Depends on what you're keeping. Do you have a sump also? What size pump are you using for that?

Personally, I think that size evo is going to be a bit small, but I keep sps which need more flow. I had 2 maxijet mods on each end of the same size tank and it seemed to be more than enough flow. Those put out about 1200gph each. A tank with soft corals and such would not need as much flow.

I've got the next size up evolution (1050gph) and a small maxi-jet on a 60gallon that has some lps, shrooms and an anemone, and it seems to be enough to keep cyano at bay and keep the water turning over.