I restarted my evo 13.5 and upgraded the pump from an Eheim Compacon 1000 to an AI Axis 40. The Eheim was a great pump, used it in this tank for years. Just wanted more flow. Looking around, the Axis 40 looked like the most powerful pump I could fit in the back. I haven't used a Sicce 1.0, but it's pretty much the exact same size as the Eheim. So I was stoked that the Axis 40 just drops right it, and didn't have to fight with the tank to get it past the protrusion in the 3rd chamber. Like mentioned before, you will need to either get a different pump nozzle or hose to connect it, the included barb is to big for the stock tubing.
You could run the pump at 100% with a double random flow nozzle setup, but in my tank there were flow dead spots doing that. You could probably do some adjusting to the nozzles and get better results. But I don't think just that pump would be enough for SPS corals. I plan on a mixed reef, so I put a Nero 3 on the back wall, about an inch under the return nozzles set it to a max of 50%, and the pump at 50%. Cant really see the wire coming out the back, no dead spots, dead quiet. The tank has a pair of baby black ice clowns, so when they get bigger, I know I'll be turning up the flow to accommodate SPS.