new to salt water need advise!!

Hello I'm rob, i have a 60gallon aquarium. I'm currently working on changing my fresh water set up to a salt water set up. I currently have a fluval heater, and fluval 206 canister filter. 2 powerheads on an undergravel filter. And an additional 2 circulation pumps, not sure the gph on those. Right now with the canister and undergravel filter I'm running around 350gph.

I'm looking to eventually setup a full reef tank. Any advise or info would be greatly appreciated.